Sort by
Relevancy

Free Stories

100%
Reshooting the Scene, Chapter 1
I have been a porn aficionado since I was a teenager. My first dabblings were with Hustler magazine and a *very* hardcore mini-novel called “Her Busted Asshole,” which told the raunchy story of Ginny Cummings’ sexual coming of age. In addition to the very graphic story, it had full color glossy p... Read full Story
Lovelace 2021-06-07 4,878 Bareback threesome Blowjob blonde Big Cock Sex Toys Ass to Mouth
85%
My Awkward Phase
My Awkward Phase ©Alexandra Rios 2019 The greatest lie is that what happens in high school doesn't matter, because life begins in college. I pretended to agree, although I never believed it, for I was the world's greatest liar. Wannabees I was hanging out with my friends Quinn, Barb and Anne ... Read full Story
the greatest liar 2019-06-14 12,246 Small Tits anal sex Latina Masturbation Bareback Creampie Blowjob Big Cock transformation gangbang Shemale and Girl Guy Fucks Shemale Sex Toys Ass to Mouth cosplay hormones high school real life situations
100%
From accidental trans porn addiction to a cum filled booty
One night when I was around 30 or so I was watching some porn, nothing unusual for a guy like me, aka a sex addict. Sex addiction is great if you’re Tiger Woods and swimming in poon, but for guys like me - regular, awkward, slightly handsome in a very boyish way, weirdos — it’s not that fun. We... Read full Story
CDJaneBooty 2022-04-01 10,615 first time Crossdresser Amateur Cumshot Bareback Creampie Blowjob Big Cock gay Homemade Ass to Mouth curious first time with a man
88%
Girl from Uncle
Tonight, I have to tell it all. It’s no secret that my uncle and I had a very special bond he had been eyeing me with those adventurous eyes from the time that I was 14 years old. And frankly I enjoy his ogling. I could feel my nipples get so hard when he looked through me with those alert and spark... Read full Story
Regina10 2024-02-14 5,631 anal Crossdresser Big Tits Bareback Blowjob Big Cock Ebony Lingerie Guy Fucks Shemale big ass femboy Ass to Mouth cum in mouth
91%
Hot Slutty Sissy
Hello, It’s me, and. I am about to make a big decision and right now I am dedicated to my fantasy. I got a call today from one of my ex boyfriends. I got so horny when I heard his voice that my nipples turn to steel. My titties seem to respond to the sound of his vibrating baritone. I couldn’t refu... Read full Story
Regina10 2020-08-14 7,056 Crossdresser Cumshot Bareback Fetish Blowjob blonde Big Cock Ebony Ladyboy Lingerie Guy Fucks Shemale Ass to Mouth
66%
Be My Bitch
After a long day at work, I get in my car, and look forward to the long drive home. It gives me time to unwind and relax. I try to forget about the hectic office and concentrate on my beautiful girlfriend waiting at home with that warm smile that she greets me with when I get there. However, tod... Read full Story
Go Balls Deep or Go Home 2018-08-06 31,798 Crossdresser Outdoor Bareback Blowjob Big Cock Ladyboy Lingerie domination Guy Fucks Shemale Interracial Sex Toys Ass to Mouth cum in mouth
92%
MY Party Favor Fantasy
My Party Favor Fantasy A fictional story built around an old fantasy of mine I ran a notice on one of those sex sites that said” Help me fulfill my fantasy and I bet we take care of some of yours also. Hi there, I am Penny and I am a total bottom trans w... Read full Story
pennypenny 2019-01-08 7,582 Stockings Crossdresser Group Sex Cumshot Masturbation Bareback Creampie Fetish threesome Blowjob Big Cock gangbang Lingerie redhead domination Guy Fucks Shemale Sex Toys Ass to Mouth cum in mouth double anal
100%
Big Dick Alessia Visits Dallas
Alessia Hung Mature MILF travels to visit a Big Dicked Man and his Sexy Household If you like Transexuals, big cocks, bondage, BBWs, big clits, deep throat, fisting, 69, ass fucking, sounding, piercing, cum swallowing and big loads this story is for you. If not don't bother reading. If you fav... Read full Story
darrell 2022-04-20 4,710 Group Sex Cumshot Shemale Fucks Guy Blowjob blonde Big Cock Asian Shemale and Girl Sex Toys Mature Ass to Mouth shemale + shemale
100%
College project surprise
So this story happened while I was still in college and remains without doubt, the craziest, most exciting experience of my life. So I the story begins one day when I walking to class. I went to a big university so my walk was quite long, and the first 1/3 was just through off our campus housin... Read full Story
Jsmithsub 2020-09-16 21,645 Group Sex Bareback Shemale Fucks Guy Fetish threesome Big Cock Ebony domination Ass to Mouth cum in mouth
100%
Sweet Encore
I was alone tonight and feeling just a bit paranoid as I listened to the soft music. The soothing sounds put me in a seductive mood, but It seemed that all my lovers were too busy for me, or they had other plans. Uncle Barney and my detective were probably home being dutiful husbands. Bo was under h... Read full Story
Regina10 2024-05-09 3,619 Crossdresser Big Tits Bareback Creampie Blowjob blonde Big Cock Guy Fucks Shemale big ass Ass to Mouth
100%
Regina's scary, and sexy Blind Date
I had just finished doing my makeup, finally deciding which blush to use, and I thought I had some time for my meditation. However, Mr. Cobb was early. The gold minidress I wore showed enough legs, ass and tits to make any man horny, and the strappy tanned five-inch sandals, made me feel majestic ... Read full Story
Regina10 2024-03-18 5,032 anal Crossdresser Bareback Creampie Fetish Blowjob Ebony Guy Fucks Shemale big ass sissy Ass to Mouth cum in mouth
85%
Cheating Sissy Wife
My name is Ginger and my main stud is Keith, a truck driver, who is only in town once a week. We have and ongoing role-playing fantasy that we carried out whenever he was in town. I am his dutiful ideal housewife who is perfect in every way. My talents excel in both the kitchen and the bedroom. I fi... Read full Story
Regina10 2020-07-27 7,894 Crossdresser Bareback Big Cock Ebony Ladyboy Lingerie Ass to Mouth cum in mouth double anal
100%
Alessia Travestita Hung Mature Blonde British Porn Star
Alessia Travestita Hung Mature Blonde British Porn Star If you like Transexuals, big cocks, bondage, domination, deep throat, fisting, spit roast, 69, ass fucking, cum swallowing and big loads this story is for you. If not don’t bother reading. If you like my story please leave comments and ... Read full Story
darrell 2022-01-03 5,263 Group Sex Cumshot Bareback Shemale Fucks Guy Blowjob Big Cock gangbang domination Sex Toys Mature cum in mouth shemale + shemale
100%
Mongoose Hunting and the Dark Car
After my first sexual experience with a trans girl in school (Check out Biology of Music), it was a long time before anything else got me that horny again. Which is obviously understandable given how ridiculous that whole event was. This time instead of a trans girl cumming hot jizz into my mouth af... Read full Story
terrifictim 2023-03-30 5,841 Teen (18+) Cumshot Bareback Creampie Guy Fucks Shemale rimming rimjob Ass to Mouth cum in mouth Surprise secret bathroom sex Daddy daughter risky public
100%
The Game 2
That next morning again Ada and I went down for breakfast and the table was smaller, It wasn't as grand as it had once been and to every guy at the table was now at least two girls. We had our normal breakfast and for once there seemed to be a little more chat between everyone, I think after bei... Read full Story
chris1989r 2022-01-24 4,810 Amateur Cumshot Bareback Shemale Fucks Guy Blowjob blonde Big Cock Asian domination Guy Fucks Shemale Ass to Mouth cum in mouth shemale + shemale
85%
BANGING AROUND BANGKOK
BANGING AROUND BANGKOK: THE AMOROUS ADVENTURES OF CAITLIN "MEOW" MORRISON after living and working in Thailand/SE Asia for many years i decided to write an erotic story based on some of the people i have known, venues and places i have been, and the P4P night-scene where i spent way too much... Read full Story
bkkldby 2019-06-17 14,478 first time Teen (18+) Amateur Group Sex Big Tits Cumshot Outdoor Bareback Blowjob Big Cock Asian lesbian public place
50%
My friend Barbara,
My friend Barbara, I look forward to welcoming Barbara. She is a lovely brunette with blue eyes who likes to make love without taboos. She knows how to bring our fantasies to life by imagining exciting role-playing games. - You're going to fall in love when you discover my underwear, she assur... Read full Story
sandratvtg 2024-07-04 3,125 Stockings Bareback Fetish transsexual Lingerie Sex Toys travesti Vintage rosebud plug gonflable gode xxl
84%
Lesser of Two Evils
My name is Eric. At 21, I was working as the IT guy at a prominent Caribbean cruise company. My days were usually pretty boring. Fixing computer problems were usually a no brainer for me. People are so stupid when it comes to how they use their machines that I assume there will always be a need for ... Read full Story
shemale lover 2013-03-27 23,089 hardcore Cumshot sucking ass fucking Guy Fucks Shemale
100%
Hung Trans Lesbians Fuck Two Ladyboys
Note 1: If you like Transsexuals, Trans Lesbians, Asian Ladyboys, Big Cocks, Extreme Cock Sucking, Anal Fucking, Anal Fisting, Semen Swallowing, Role Play, Orgies, BDSM, Cock Sounding and Foot Fetish this story is for you. Note 2: All the characters are over 21. The names are fictitious, but some... Read full Story
darrell 2022-01-03 4,703 Group Sex Big Tits Cumshot Bareback Fetish Blowjob Big Cock Asian Ladyboy Sex Toys Mature cum in mouth shemale + shemale
100%
Hot Trannys & Ebony Shemale Cum
I've always considered myself as a huge fan of heshe cum & porn vids. You tell me what else a man needs besides a tgirl's cock, a nice portion of shemales fucking and sucking & loads of transgender stories to tell the guys... Forget about the usual trans sexual pictures & pre-op transsex... Read full Story
shemale lover 2012-03-27 5,343 big dick blonde cum fingering huge tits
100%
A Perfect Pandemic: A Transsexual Transition in a Troubled Time
A Perfect Pandemic A Transsexual Transition in a Troubled Time A Novelette by Alexandra Rios Text Copyright Reserved © August, 2021 Dedication Transgender Day of Remembrance is a solemn occasion. I am offering “A Perfect Pandemic” for free as an antidote to the fear, phobia, discrimination, d... Read full Story
the greatest liar 2021-11-16 6,396 Teen (18+) Crossdresser Group Sex Big Tits Bareback Creampie Big Cock gangbang domination Guy Fucks Shemale Interracial double anal webcams
95%
My best friend turned trans.....so I fucked him - Part 1
Theres a bit of history to this one so strap in! I started hanging out with this group of kids in my area when I was 12 years old, we did all the typical stuff you can imagine young kids getting up to (played football, chased girls etc...) over the years I became really good friends with one of the ... Read full Story
iconicirish 2023-05-11 9,558 Stockings Amateur cock Masturbation sucking Blowjob Big Cock Lingerie Latex transgender sissy
100%
Beryl's birthday suit
I tried on my sister's panties when I was 12. They looked so cute, so sexy.. I couldn't help myself. I tucked my dick between my legs and pulled them over my hips, delicately positioning them just like a girl. They felt yummy! When I saw the shiny, lacy pink briefs in the mirror - snug, flat pu... Read full Story
Beryl 2023-12-12 7,689 first time Stockings Crossdresser Bareback Blowjob Big Cock Lingerie redhead sissy cum in mouth
93%
Virgin Slut Cravings.
There have been so many times that I have had to hide how I felt because I lived my life denying who I was. I was a closet queen who was pretending to be normal. Some might have guessed my secret if they were observant. I didn't do things that other boys my age did. I love hanging out at home like a... Read full Story
Regina10 2020-09-29 8,909 Stockings Crossdresser Big Tits Cumshot Bareback Creampie Blowjob blonde Big Cock Lingerie Guy Fucks Shemale pov
100%
TO BE OR NOT TO BE – PART 6
TO BE OR NOT TO BE – PART 6 by Spanky de Bautumn Part 5. Sunny and Antonio got frisky at the bar, Sunny moved in with Mel and Shari, and opening night was a success The only other dress that I brought was one that I hoped I would get a chance to wear but didn't think I would. It was a black ... Read full Story
SpankydeBautumn 2021-02-26 2,710 Crossdresser Cumshot Masturbation Bareback Creampie Blowjob Big Cock Lingerie Guy Fucks Shemale cum in mouth
80%
A Fairy Tale Part 1
=-=-Chapter One-=-= "Heather?" My boyfriend was knocking on the bathroom door. "What's wrong, are you okay? Heather?" "Yeah..." I swallowed thickly and that was a mistake. I threw up some more, kneeling on the floor, feeling like I was dying. "Heather?&q... Read full Story
shemale lover 2011-12-06 11,834 Bareback cum ass fucking slave
100%
A Fairy Tale Part 2
=-=-Chapter Six-=-= I woke up sometime later and I was feeling better, even a little hungry actually, and I wanted a shower and I needed to pee and...I cocked my head as I heard the unmistakable sounds of Mistress Stacy's bed moving. She had a large one, king sized, with old springs or somethi... Read full Story
shemale lover 2011-12-06 6,980 Creampie Big Cock ass fucking
100%
The Experience of a Lifetime
My divorce was hitting me really hard. My wife outgrew our relationship and started living her own life and I had a front row seat to everything. My heart and life was upside down. I didn’t go out anymore. Friends and family both told me it was time to get my life back on track and start living ... Read full Story
therefill05 2020-11-30 20,613 Big Tits Cumshot Bareback Creampie Shemale Fucks Guy threesome Blowjob blonde Big Cock Ebony Uniform domination cum in mouth
100%
TO BE OR NOT TO BE – PART 2
TO BE OR NOT TO BE – PART 2 by Spanky de Bautumn Part 1. Sunny, Mel, and Shari learn they are going to New York to perform a play off Broadway and are really excited about it. Being a small troupe, we unseen members had to wear many hats. Unfortunately, there was just the two of us, Joe Donn... Read full Story
SpankydeBautumn 2021-02-22 3,942 Small Tits Crossdresser Cumshot Bareback Blowjob Big Cock Lingerie Guy Fucks Shemale Interracial cum in mouth
85%
THE WEATHERGIRL BY B-MAN
PART 1: A COURTESY CLIENT BLOWJOB Three weeks into my gig at Coxon & Dicster had been a blast. At first, a few of the girls had some reservations about me working there because I wasn't transgendered myself but I guess I won them over with my naturally cheerful personality. At least,... Read full Story
bennyx709 2015-07-29 7,901 Crossdresser hardcore ass fucking cd
100%
I was backstage giving blowjobs at a transsexual beauty pageant
I was backstage giving blowjobs at a transsexual beauty pageant I had this neighbor, who cross-dressers on weekends for a LGBT club. She invited me to an annual transsexual beauty pageant. Beautiful slutty shemales competing to be the official beauty queen for the club. She happens to be hosti... Read full Story
My Shemale Attraction 2024-08-07 3,964 Crossdresser Group Sex Big Tits Cumshot Blowjob blonde Big Cock Ebony gangbang domination pantyhose
50%
A Perfect Life
The reasons I am not writing this myself. I have finally convinced someone to do it for me. She promised to post it on the Internet, but only as fiction. I suppose it is a bit unbelievable. It all started with the best of intentions. I had married my love while we were still in college. She... Read full Story
shemale lover 2012-05-05 12,899 transgender
100%
I Give Up
The following story is the first of four parts of a tale that explores the theme of transformation. It is thematically similar others that I have submitted but has a larger narrative arc. I hope you enjoy reading the first portion, Act One & Two. I continue to work on better editing and someone h... Read full Story
ASSEaster5678 2018-09-14 9,443 Cumshot Bareback Shemale Fucks Guy Big Cock Ladyboy
100%
A night to remember
Josie wasn't a girl a man would turn his head for if he saw her on the streets. She was a small, petite girl, her breasts barely an B cup. She was wearing her light brown hair in an inconspicuous short cut and the thick glasses she needed for being able to see anything in her surrounding, didn'... Read full Story
shemale lover 2011-12-11 5,434 first time tg
33%
Duel With the Devil, Chapter 20 of The Greatest Liar
Duel With The Devil This is a work of fiction. All characters (including the narrator), celebrities, places, residences, neighborhoods, restaurants, legal agreements and proceedings, events and incidents are either the products of the author's imagination or used in a fictitious manner. Any r... Read full Story
the greatest liar 2023-07-19 4,352 anal Bareback Creampie Ebony Guy Fucks Shemale post-op celebrity post op sex
100%
Police House Call
My heart was beating a mile a minute when I heard the knock on my door. I was hoping that it might be Beau, or Larry, or if I’m lucky it would be Tom Cobb. He asked me to call him Tommy. I had been thinking about him recently. Bo and I had banged the night before, but I was as horny as ever. Larry w... Read full Story
Regina10 2024-04-19 3,927 Crossdresser Big Tits Bareback Blowjob Big Cock Ebony Guy Fucks Shemale big ass femboy cum in mouth
100%
Desiree and Big John
It had been only a week since I'd introduced "Desiree, the Hot to Trot Transvestite" to my girlfriend Suzie, leaving me not a bit surprised that she chose not to spend the very next weekend at my place. While she hadn't freaked out, she was concerned I was gay since I was so convincing but... Read full Story
shemale lover 2012-08-20 4,676 first time anal sex transvestite cum swallowing
100%
Joanna the Tranny Prostitute
Joanna stood on the street corner and casually shifted her posture from one leg to the other. So far it had been a quiet evening for her with few punters around. Not many girls were plying the streets either. She’d had one customer earlier. He had been an Asian guy in a Toyota who’d stop... Read full Story
Joannacd1 2011-11-07 4,548 tranny Crossdresser Ebony
100%
Claudia Coming out adventure part 1
*Author's Note: This story starts off being told in First person and after awhile the story shifts to third person* Hello everyone, my name is Claudia I am a Cross dresser who one day hopes to be transgendered, although I do not want the surgery, I am looking to eventually live my life full... Read full Story
MissClaudia 2015-01-04 6,164 tranny Stockings suck Creampie ass fucking doggy style Latex
66%
Cassandra Chapter 1
Cassandra is a tease, a flirt, a slut, a girl who lives very much for the moment. Unconcerned with propriety or fashion trends, she dresses in clothes that go right for the jugular of a fetishist's libido. Spandex, leather, latex, spike heels, corsets, overdone hair, make-up and fingernails - these ... Read full Story
shemale lover 2012-03-27 6,124 sucking fuck orgasm crossdressing
50%
Freak House Superstar Come Fest
Kiki and Ty Blaze were doing their thing. They were living on their love and passion, literally. The couple had taken their love, passion and desire to please one another and turned it into their livelihood. They had become stars in the world of underground porn. Their production studio, Nasty Nigga... Read full Story
shemale lover 2012-02-01 6,591 anal shemales Group Sex
72%
ACROSS THE STREET AND TWO DOORS DOWN by Spanky de Bautumn
Jamie knew he was different. He didn’t fit in with the other boys, but he didn’t feel like he fit in with the girls either, he just knew he was different. He wasn’t into dolls or balls. He was the smallest boy in his class and more than half the girls outweighed him. But the one thing he had going f... Read full Story
SpankydeBautumn 2021-01-29 11,701 Teen (18+) Small Tits Crossdresser Fetish Blowjob Lingerie Guy Fucks Shemale cum in mouth
90%
Saving My Marriage
I love to write Erotica. For story requests please send me a private message or email noirenoire10@gmail.com It was our anniversary. Today made five years that my wife and I have been married and we were taking a road trip to celebrate. I chose our destination but I let her choose all of our a... Read full Story
therefill05 2021-02-16 6,403 Cumshot Bareback Creampie Shemale Fucks Guy threesome Blowjob Big Cock Ebony domination Sex Toys cum in mouth
75%
A Couple And A Shemale Encounter
Not long ago I was sitting home alone on a Friday night with nothing much to do and feeling horny so I decided to go out. I showered, misted myself with my favorite perfume, put on a sexy black bra, rolled on a silky new pair of jet black sheer to waist pantyhose, slipped into a tight, very short, l... Read full Story
shemale lover 2011-08-26 5,432 anal Creampie shemale
100%
TV television
My girlfriend Gloria and I had just moved into an apartment together, having gone out for six months or so, before making the committment. We moved in furniture from each of our apartments, after deciding what would go best in the new place. With the exception of a television, we really had everythi... Read full Story
shemale lover 2011-12-11 5,487 Fetish trans tv
94%
CD and BBC Gangbang 1
My name is Mike, as a "Gurl" I go by Fiona. I am a gay man, mid thrities, white, 5' 9' 165, reasonably handsome, both in and out of women's clothes. One of the ways I express my sexuality is to dress as a woman and get fucked by other men. Preferably in a humiliati... Read full Story
FionaFucked 2014-10-27 14,299 Group Sex gangbang Interracial cd sissy
100%
Hits, Misses: G
Ok, what follows are some accounts of hookups and almost hookups I've had with transwomen in the late 2000s, early 2010s. Some I think about a lot. Others I've forgotten completely and am attempting to interrogate my memories. Things have changed a lot in the culture, mostly for the better. Visibili... Read full Story
bybaking 2024-02-06 5,088 anal Amateur Cumshot Bareback Big Cock Ebony Guy Fucks Shemale Interracial black Tgirl
100%
Late Night Snack (Touch me in the morning)
I was awakened abruptly by someone banging on my door at 1am. At first, I thought it might be Harry, the man who replaced Mr. Cobb in my bed a few nights ago. He had been persistent and horny constantly. I think it was because fucking trans women like me was new to him and he hadn’t got enough of th... Read full Story
Regina10 2024-03-28 4,273 anal Big Tits Bareback Creampie Shemale Fucks Guy Blowjob Big Cock Ebony Ladyboy Lingerie
50%
The Greatest Lie Part 15
I think that if you could get honest answers, a lot of heterosexual guys would probably admit to having had at least a passing desire to be a girl. If they were honest, they would probably admit they thought of it "when I first noticed a girl's breasts" or "when I first felt a girl or... Read full Story
shemale lover 2012-01-20 6,490 anal hardcore erotic encounters fantastic
66%
Would You
'Would you...?' 'Look the part to play the part....' 1 5' 4...dreaded, and to be dreaded....bookish, be-spectacled—damn near owlish....so much so that you might miss the way her tits spoke to you no matter how much she attempted to 'silence' them ....that you might miss the way her sk... Read full Story
shemale lover 2012-09-23 6,841 sucking cum massage
100%
Intense
Holding to my word, I didn't let the incident with Billy and his friends scare me away from Bailey; I kept seeing her, even after the beating I took. To be honest, I'm not sure if he was trying to lay low or what, but Billy seemed to keep his distance from me for a while...thankfully. Bailey and ... Read full Story
Verpa 2019-10-21 11,061 Big Tits Cumshot Bareback Creampie Shemale Fucks Guy Blowjob Big Cock cum in mouth
95%
First time
Hi, my name is Sandra. In fact, I'm not exactly a girl, but a CD. Even as a child, I felt different and I used every opportunity when I was left alone in the apartment to dress up, to put on women's clothes, to put on make-up. In time, I started watching porn, as did all my friends. But, unlike them... Read full Story
cd Sandra 2021-10-13 5,982 Stockings Teen (18+) Small Tits Crossdresser blonde Guy Fucks Shemale
96%
Family Frolic
FRIDAY My sister and her husband wanted to take a few weeks off in the sun and asked me to look after their kids for a while. I'd move out of my tiny apartment and into their house for the duration. As I was still living off my severance and they had a nice spread with an indoor pool and a h... Read full Story
shemale lover 2012-01-14 31,406 strapon porn
100%
Tight Spot
XtinaSmith2017 Cody bit his lip as he looked over towards the shop, a little anxious about their planned endeavor but not wanting to come off as uncool to his friends, "Are you sure this is a good idea?" he asked. His friends grinned and laughed, playfully nudging him as they made their way ... Read full Story
Gwapo67 2022-07-22 6,196 Big Tits Bareback Creampie Shemale Fucks Guy Fetish Blowjob Big Cock Lingerie domination cum in mouth
100%
The Interview
The Interview By Sabrina G. Langton *** 'A crossdresser goes on an interview in lots of pink, of course she gets the job' 'Author's note, just a quick little story with some really graphic sex, and a little tiny moral. I hope YOU like it.' *** "Okay, sit, sit, let's get started. S... Read full Story
Brina Giselle 2023-12-04 6,980 anal Crossdresser Blowjob heels cum in mouth pink dress
69%
From Mob to Shemale
Two years ago, I was a member of the Ciccio family in Chicago. I wasn't very high up in the organization, because I wasn't Italian. I had made my way up through the ranks, however, and was making a pretty good living. I had everything I wanted, got all the girls I wanted, and did just about ... Read full Story
shemale lover 2011-10-29 10,748 orgasm facial oral sex