Sort by
Relevancy

Free Stories

100%
Regina’s Double threat.
Hello guys, I recently ran into a former hater who was no longer the hater I had met years earlier. In fact, he had only treated me so horribly because of his own inner dark desires. When we met a few years ago at one of the clubs, he had been very abusive to me. He went out of his way to say hurtfu... Read full Story
Regina10 2022-02-08 3,314 Big Tits Cumshot Bareback Creampie Fetish Blowjob blonde Big Cock redhead Guy Fucks Shemale Ass to Mouth double anal
50%
Lady Regina
I know that many say that I I’m a coward because I am comfortable living in the closet as a part time female and not expressing my special female side completely. My friends all tell me to go out and have fun and not worry about what people say or think. In spite of that, and because of the prudish... Read full Story
Regina10 2022-07-01 5,363 Crossdresser Big Tits Masturbation Bareback Fetish Blowjob Ladyboy gangbang Lingerie Guy Fucks Shemale Mature pov
100%
Slutty Sissy's 2 Loves
Tonight was young and I was already hot and bothered, my ass-pussy was on fire, and I could hardly wait for Bob and John to come over. I had invited them over to fulfill those erotic dreams I am constantly having about the two of them using me like a tool, and I wanted that so bad. I fantasized abou... Read full Story
Regina10 2020-11-23 5,266 Group Sex Big Tits Cumshot Bareback Blowjob Big Cock Ladyboy Lingerie Guy Fucks Shemale pov Ass to Mouth cum in mouth double anal
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
94%
Sissy Slut: Gang Favored
I confess I am a nymphomaniac shemale slut who loves being the object of a man’s desires. That's why I was out here with these hookers trying to hook up with somebody to have sex. I'm either having sex or I'm thinking about having sex most of the time I like being a honey. I love having sex with men... Read full Story
Regina10 2021-03-02 7,818 Stockings Big Tits Cumshot Bareback Fetish Blowjob Big Cock Ladyboy gangbang Guy Fucks Shemale cum in mouth double anal
66%
intimate Cousins
My favorite cousin and first lover, Billy, was just released from prison and I was anxious to see him. I am ecstatic that he is out, and I am thinking about all the past fun we had as I prepare to revisit those good times. Tommy knows all about my relationship with Billy and he understands my need t... Read full Story
Regina10 2022-05-13 6,371 Stockings Crossdresser Cumshot Masturbation Bareback Blowjob Big Cock Ladyboy Guy Fucks Shemale Ass to Mouth cum in mouth double anal
100%
I wanna fuck almost everyday
I can't stop thinking to be Double penetrated for two men at the same time.... It makes me feel I'm insatiable gurl... Two Big cocks mmmmmmm after been fucked for so long ... I will never go back... And certainly I will totally satisfied and addicted to it...... Read full Story
Bellasohot 2022-07-13 4,143 Crossdresser Amateur Latina Bareback threesome Big Cock Ladyboy Lingerie Guy Fucks Shemale Mature Ass to Mouth double anal
100%
My story, more or less pt.3
Earlier on, when I was scouring through various drawers and closets for feminine clothes in my home I have stumbled upon two old skipping ropes. "A fun time" I thought to myself, not giving them another look and continuing with my search. Little did I know they would become the backbone of my "sessi... Read full Story
Thigh_High_Boi 2023-01-06 3,894 Stockings Masturbation Fetish Ladyboy Lingerie Homemade pov
0%
Looking-Glass Ladyboy
I was taking a walk to stay--all right; I'll admit it--to get in shape, when I saw the "Going Out of Business" sign in the second-hand furniture store a block north of my condo. I wasn't in the market for anything, new or used, but I can't resist a bargain, and what was better for finding ... Read full Story
shemale lover 2011-10-29 7,916 asshole Fetish Ladyboy
100%
My Sugar Daddy Fucked My Girlfriend...And I Joined In
I am a shaved-smooth, boyish bisexual male slut. At 43, I still look and feel young, and I enjoy the feel of and attention from older men, the older the better, 55 and up, with gray hair, wrinkles, and very hairy chests and bods. My Daddy, a 70-year-old White man that fits this description, "owns" m... Read full Story
Chrissy Tunnell 2022-04-12 3,018 Crossdresser Amateur Shemale Fucks Guy Fetish Blowjob Ladyboy Shemale and Girl Guy Fucks Shemale Mature cum in mouth double anal
100%
Couple and a Tranny
There is a saying that a single man looking for companionship and good fortune will seek someone for marriage. Lydia and I met several months ago on an online dating site. We agreed to meet at a bar restaurant for drinks and initial meeting. She was at the bar wearing a yellow sundress, white painte... Read full Story
Jon Paul 2022-09-20 5,645 Cumshot Outdoor Latina Bareback threesome Ladyboy Shemale and Girl Guy Fucks Shemale Ass to Mouth double anal
100%
From a 50's virgin to a Mature good for all
***Prologue - Confessions: Every day since I offered my virginity, I put myself in the shoes of a woman. The little town where I live forbids me to show myself socially. However I made myself an accomplice, my epilator who receives me after closing. Since my new beginning, male masturbations are not... Read full Story
hippocampus_171 2023-01-11 4,639 Stockings Crossdresser Amateur Group Sex threesome Big Cock domination Mature foursome Homemade cum in mouth shemale + shemale milfs
100%
delicious virile male flesh
Tasted delicious virile male flesh… The breeze caressed my swollen nipples giving me pleasant shivers. The two glasses of Riesling had also contributed to my excitement. My crotch was burning as if the disappearing sun had blown all its thermal energy into me. Under my fine lace panties, purple o... Read full Story
hippocampus_171 2023-04-23 5,282 anal Small Tits Amateur Creampie Blowjob Mature small cock big ass feminisation cum in mouth gaycd virile
100%
My Noisy Upstairs Neighbors
So... I just moved into my new apartment a few weeks ago, and ever since then all day every day I have been hearing loud noises from my upstairs neighbors. Not just normal walking-around noise, but loud and heavy bangs, crashes, and poundings against the floor, my ceiling. Not only was the sound ann... Read full Story
Chrissy Tunnell 2024-07-15 4,170 Crossdresser Bareback Fetish Blowjob Ladyboy gangbang domination Guy Fucks Shemale sissy double anal
66%
Sissy and Horses
The scariest and best day in my sissy life, was when I was put in a box, tied up, an anal plug in my mouth and a huge bbc dildo in my ass. I was put in the box by my BBC master, who promised me a day of surprises.... I stayed in the box for some hours, my ass hurts of the giant bbc dildo, my mouth ... Read full Story
brunasissyslavedolrj 2024-09-06 2,538 anal Crossdresser Amateur Cumshot Latina Fetish Ladyboy gangbang domination Interracial femboy Ass to Mouth double anal
100%
Florida TG Experience
I had known Jan from High School, we always had an attraction for each other but were dating someone else or married at the time. Jan had actually married a friend of mine and I was envious of course. She at that time had sandy blonde hair, and a body to die for. One evening we had them over for dr... Read full Story
Jon Paul 2018-08-13 11,416 Group Sex Big Tits Bareback Creampie Blowjob blonde Asian Ladyboy Shemale and Girl Guy Fucks Shemale Ass to Mouth cum in mouth double anal
75%
Passion in the Rough
Tonight, I was searching in vain for a parking place close to the club, but unfortunately, I had arrived late and there were no empty spaces close by. I drove around and went down several streets in the same block until I found an empty spot. That was perfect I thought as I found a parking place and... Read full Story
Regina10 2024-04-27 3,787 anal Crossdresser Big Tits Outdoor Bareback Creampie Blowjob blonde Big Cock Ladyboy gangbang Guy Fucks Shemale
100%
Camming Down the Rabbit Hole Ch. 07
Opening my eyes I struggled a little as the residual cum on my face from last night’s show hadn’t been fully wiped off, I felt the dry and crusty leftovers crinkle on my skin, but couldn’t help but smile to myself as I remembered how it had got there. The intensity of that orgasm had been on another... Read full Story
Dani_does_Dallas 2021-10-22 6,592 Stockings Small Tits Crossdresser Amateur Cumshot Masturbation Fetish Lingerie Sex Toys Homemade self sucking pov cum in mouth
100%
Camming Down the Rabbit Hole Ch. 09
As per my previous mornings recently, I stirred and rubbed the sleep from my eyes, that delicious feeling of my silk night ware stretching over my taught nipples and my morning wood throbbing in its lace enclosure. The urge to touch myself was palpable, it seemed no matter how hard I came the night ... Read full Story
Dani_does_Dallas 2022-03-22 3,788 Stockings Crossdresser solo Amateur Cumshot Masturbation Lingerie Sex Toys Homemade self sucking pov cum in mouth webcams
100%
Sissie Slut's Windows of Womanhood
I flash back to my first time with a grownup adult at the tender age of16 . I was so nervous now that we were here in the motel room. I was nervous for so many reasons. I lied to my family and told them I was staying at a friend’s house. Instead, I'm here with Mr. Joey in a motel room and he was my... Read full Story
Regina10 2021-02-22 6,917 Crossdresser Bareback Creampie Fetish Blowjob blonde Ladyboy Lingerie Guy Fucks Shemale Ass to Mouth cum in mouth double anal
89%
Fem Firm 2 -The Weathergirl
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 2016-11-14 18,332 big dick anal sex suck Blowjob cock sucking workplace
100%
How I Became His Office Fucktoy
Until this job ended last year, every day at my lunch break I would service one of my many Daddies in his office in the building where I worked. He'd always slip me a few bucks, a $20 or even $50 afterwards, not as a payment for sex, but as a "tip" "for all the hard work you do here," he says. I wor... Read full Story
Chrissy Tunnell 2022-02-18 4,025 Crossdresser Amateur Fetish Blowjob Ladyboy domination Guy Fucks Shemale Mature cum in mouth
100%
The Three of Us
Imagine you are a lonely person on the inside, and just wanting all your life to be loved for who you are. Holli Artigas, was just that person. Wondering whether her obsession with Jon Silva, a football star, was from a casual encounter, or was she truly fond of him? Growing up in the Sao Paulo, ... Read full Story
Jon Paul 2024-04-28 3,800 anal Creampie Shemale Fucks Guy threesome Shemale and Girl cum in mouth double anal shemale fucks female
100%
Fetish party with a twist
The smell of rubber and latex and the combination of the strobe lighting was overpowering, the techno sound of the club just added to the already intoxicated atmosphere of the place. The club was a frenzy of half naked, latexed, rubberised bodies covered in sweat dancing to the frenzied sound of tec... Read full Story
shemale lover 2011-09-22 4,551 anal sex Group Sex cum Latex
80%
Fetish party with a twist
The smell of rubber and latex and the combination of the strobe lighting was overpowering, the techno sound of the club just added to the already intoxicated atmosphere of the place. The club was a frenzy of half naked, latexed, rubberised bodies covered in sweat dancing to the frenzied sound of tec... Read full Story
shemale lover 2012-04-22 2,563 anal sex oral sex handjob
100%
A Game within a Game Part 1
Epilogue Rob came home from work. His wife Jenny was waiting for him. In her hands she held a letter. Jenny said: "We received this letter today. It is sad news from Marion S. We have met her and her husband John a few times - do you remember? John has had a car accident while driving fas... Read full Story
shemale lover 2012-03-05 14,546 Fetish bdsm crossdressing bisexual
100%
Unconditional Love Chapter 8
After a two' hour nap, Alison and I awoke and the first thing we did was make our way to the bathroom to freshen up. I started up the hot water and climbed into the shower and' once she finished relieving her bladder Allie climbed in with me under the hot water and we embraced each other. We kiss... Read full Story
shemale lover 2013-02-04 6,555 anal sex Cumshot Masturbation Blowjob Guy Fucks Shemale
83%
Teacher Student Confidentiality
It was raining cats and dogs outside as Ms. Catherine Walker (Cat by her friends) graded her Accelerated Integrated Geometry test scores. Her was long and flowing and her sweater was purposely pulled low to embarrass the male teachers with her cleavage. Her cock twitched as she shifted her leg to a ... Read full Story
shemale lover 2012-02-11 14,348 anal Blowjob black fiction
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 6,491 anal hardcore erotic encounters fantastic
75%
Aunt trip
In 2013, after almost three years of service in Afghanistan, George Madsen, a gay Royal Navy communications petty officer, retired. His experience in the distant deserts had left an indelible mark, the memories of friends lost and challenges faced still burned vividly in his mind. Coming home was n... Read full Story
Rebba 2024-04-25 3,730 Shemale Fucks Guy Blowjob Big Cock Ladyboy Guy Fucks Shemale shemale fucks shemale Fantasy Tale
37%
First time Crossdressing
I am a bisexual man, meeting straight, bisexual or gay men for our sexual pleasures. I post messages on various message boards that allow members profiles and posting messages. I also post to local groups in my area that allows one to post messages to a small geographical area or to a distant user g... Read full Story
shemale lover 2013-07-17 6,344 first time Crossdresser Fetish Mature bisexual
72%
DENISE IN BLACK FF NYLONS AND HEELS
I have a passion for corsets and black fully fashioned seamed nylons, which I like to wear with tight revealing tops and miniskirts or very clingy dresses. I always wear multi strap 10 or 14 suspenders with a tight lacing corset that reduces my waist and gives a sexy outline to my shape. My favou... Read full Story
DENISEFFNYLONS 2018-04-03 8,334 Stockings Fetish threesome gangbang Lingerie Mature cum in 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 12,248 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%
Bi-Night 18.09.24
Wieder war die Bi-Night im Cruisingworld Volketswil angesagt. Da Fimia und Andrea in Mykonos im Urlaub sind, habe ich mich allein auf den Weg gemacht und bin so gegen 16 Uhr eingetroffen. Eine nette Begrüssung am Clubeingang und schon ging es in die Garderobe. In der Garderobe sprach mich auch glei... Read full Story
Cheryl_F 2024-09-02 312 anal Amateur Creampie Fetish Blowjob Ladyboy gangbang Shemale and Girl sissy pov shemale fucks shemale shemale + shemale shemale fucks female
0%
The Greatest Lie Part 13
Does Life Imitate Art? I love technology, in spite of the stereotype about girls. Although I was a guy, at least outwardly, until a year ago, I think I was always inwardly a girl. According to the stereotype, we girls are supposed to be indifferent to anything more technical than the designer cov... Read full Story
shemale lover 2012-01-20 5,048 femdom erotic encounters consensual
76%
Nylon teasers
They came into the video store where I worked as a clerk. Almost every day. Teasers. Both of them. What made it both great and terrible for me was that it fed my deepest fetish -- stockings -- as it denied me any fulfillment other than frequent and frantic "self-gratification."... Read full Story
shemale lover 2012-01-30 10,203 Stockings Big Tits fucking foot fetish
33%
A Certain Perception
Kyra was not the girl of my dreams. I never DARED dream a woman that good would just walk into my life. She was smart, sassy, vivacious, intuitive, resourceful, and a real 'people person'. We met in an Internet chat room called "Working Girls". We're not talking about the kind you find in ... Read full Story
shemale lover 2012-02-23 8,512 Fetish transformation dildo
97%
Stepdaughter's Transexual Surprise
I've been through two marriages in the past. My first wife died at an early age of 29 from a massive heart attack and my second marriage was a nightmare from hell, that I'm now free of. When I met Jeanie, I knew I had to take it slow and easy. Jeanie was a very nice lady in her early 40's. I myse... Read full Story
shemale lover 2011-12-04 13,838 anal Fetish transexual
82%
Bikini Boy
I was the boy my father had hoped for after 3 daughters before me. Life in our suburban middle class two-story house was as normal as anyone else's. My dad was a loving father bringing me up and doing the things a father likes to do with his son – baseball, fishing, camping, working the garage... Read full Story
shemale lover 2012-06-12 15,812 Cumshot Fetish oral sex crossdressing
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
50%
"SISSIFIED": 12 JOURS DE SISSY-MAS
JOUR 1: mardi 25 C'était le matin de Noël quand j'ai entendu frapper à ma porte, ce qui était, bien sûr, très étrange à dix heures du matin. À midi, j'allais chez ma famille pour Noël, et j'avais rarement des visiteurs inattendus. Toujours dans ma robe, je me dirigeai vers la porte et fus s... Read full Story
Femboy 2021 2023-01-20 1,591 Stockings Crossdresser Amateur Fetish Blowjob Big Cock Lingerie domination Sex Toys cum in mouth
80%
Office Policy
“Ok ladies and gentleman, please put your hands together for the beautiful and talented Erika!” the DJ’s voice rang out over the thumping alternative beat as the object of my lust strutted to the stage. Erika’s saucy red curls bounced on her head and on her soft porcelain whi... Read full Story
shemale lover 2012-08-30 8,875 anal ass sucking threesome tits fingering sex blondie
75%
Kidnapped (Adult Fiction)
Kidnapped I remember being normal. I was a young man in my 20's living in my parent's house struggling to get by. I was online more than I probably should have, but it was an escape from the harsh reality of my life. I didn't feel fulfilled or like a success, I felt like a failure on many differe... Read full Story
Vennom 2019-06-17 25,092 Fetish transformation fiction pov mind control drug interaction mind mindfuck change
100%
Cheating Sissy Wife chapter2
My sweetheart Keith is back from his road trip and we were about to make up for lost time. He didn’t even want me to fix dinner. Instead he said that we would order pizza later. Meanwhile we started making out right there on the couch. We were both horny and anxious to get next to each other. I felt... Read full Story
Regina10 2020-10-26 5,077 Crossdresser Big Tits Cumshot Bareback Creampie Blowjob Big Cock Ladyboy Lingerie Guy Fucks Shemale pov Ass to Mouth
100%
How My Wife Became a Swinger
Hello, my name is Jackson, Jack for short, and I'd like to tell you about my wife and I and how we became swingers. I've changed the names of people and places to preserve privacy. Just so you know this does involve male on male sex and inter course with a transsexual. So let me begin. For the fi... Read full Story
Loveto 2011-10-12 8,937 anal bisexual gay strap-on
50%
How My Wife Became a Swinger
Hello, my name is Jackson, Jack for short, and I'd like to tell you about my wife and I and how we became swingers. I've changed the names of people and places to preserve privacy. Just so you know this does involve male on male sex and inter course with a transsexual. So let me begin. For the fi... Read full Story
shemale lover 2011-11-13 5,458 Group Sex Cumshot sucking doggy style
83%
Elaine & Me
- Chapter One – Our First Meeting - I had two weeks to go before the final degree exams and I was working hard. Perhaps too hard, because I desperately needed a break from the hours and hours of revision. It felt like I just couldn't take in any more detail about Quantum Mechanics or Solid ... Read full Story
shemale lover 2012-03-31 11,661 sucking Fetish transsexual
87%
Feminized By My Mother Chapter 2
My mom was staying in as were Jen's parents so we parked on a dark road and made out while I fingered her. Her panties were absolutely drenched when I was finished, and she rubbed her hand inside them and used her pussy juice to jerk me off, I spurted all over my pants and she laughed. "I ho... Read full Story
shemale lover 2012-07-24 13,459 sucking Fetish fucking sissy
80%
Me and 2 black men
Hello again this is EvA…I am a 40 year old tranny. I do not consider my self a crossdresser anymore, because I am doing that for so long that I have been transformed to a very sexy and feminine ladyboy. I have been taking also hormones for 4 years, on and off and I already saw many changes&he... Read full Story
shemale lover 2013-06-22 5,835 Cumshot suck Ladyboy Guy Fucks Shemale Interracial swallowing
40%
Dating all whole my life
Julia and Ilya, together 10 years It was more than 10 years and 2 children ago. In December 2005, we agreed to meet at the gate of my office after a working day. I did not go out godlessly for a long time (40 minutes from the appointed time), but he still waited. I hope he does not regret it ... Read full Story
PornoDating 2019-08-15 4,273 Crossdresser Amateur Big Tits Cumshot Bareback Creampie Fetish Blowjob blonde Big Cock Asian gangbang domination Guy Fucks Shemale Interracial sex Mature Futanari Frottage Compilation Ass to Mouth Cartoon cum in mouth double anal dating life in Mars? life
100%
Sissy Slut Reunion
Rob had moved back to town and called me. He had just moved into his new place and he wanted me to come by and talk. I knew what he really wanted from the tone of his voice, because I wanted it too. He said he had been thinking and dreamed about me the whole time he was away. My spirits lifted and ... Read full Story
Regina10 2020-09-14 4,459 Crossdresser Big Tits Cumshot Bareback Creampie Fetish Big Cock Ebony Ladyboy Guy Fucks Shemale Ass to Mouth cum in mouth
85%
Becoming My Roomate's Wife
Him becoming my master started a year ago when we moved in as roommates – we are both in our mid 20's and had relationships break up at the same time (we were sharing apartments with our girl friends at the time). We have known each other for more than a decade and have no secrets from each ot... Read full Story
shemale lover 2012-04-01 9,053 Crossdresser anal sex domination oral sex
100%
Camming down the rabbit hole Ch6
In the morning I decided to give the running a miss and do a long session with the DVD, my legs had become a little sore and tight so some extra stretches and yoga would really help. I once again surprised myself with how much more flexible I had become, the plug still in my ass giving me occasional... Read full Story
Dani_does_Dallas 2021-10-11 5,170 Stockings Crossdresser solo Amateur Cumshot Masturbation Lingerie Sex Toys Homemade pov cum in mouth webcams
100%
Uncle sweet Lover
Uncle Barney called me this morning and wanted me to keep my evening free. He wanted to meet me at the motel with a surprise for me. I was so excited and could hardly wait. I had to decide on something to wear, but when I thought about it, I realized that I wanted to wear something special. He would... Read full Story
Regina10 2024-02-19 5,196 anal Crossdresser Big Tits Creampie Fetish Blowjob Big Cock Ebony Ladyboy Guy Fucks Shemale Mature big ass femboy
73%
Nightclub Cum Slut
After splitting with my first boyfriend I went through a period of time I call my slut phase. I explored my sexuality in a massive way and did as much cock ass and pussy as I could. I thought that after I had been in a few relationships that my slut phase was over. I still had the odd one night stan... Read full Story
shemale lover 2013-01-10 7,439 Cumshot sucking ass fucking Guy Fucks Shemale ass fingering
100%
the orgiastic fever of a trans-milf
Simulating a woman, or the orgiastic fever of a trans-milf It's been two months since I moved to the megapolis, where I've discovered several places where the third gender goes. One of my first explorations was a huge lingerie shop in a MALL; I wanted to buy some sexy stuff without being noticed ... Read full Story
hippocampus_171 2024-09-04 2,275 anal Amateur Cumshot Creampie Shemale Fucks Guy Latex Sex Toys Mature small cock