Becky would wait.
At 18, she certainly wasn't the most popular girl in college. She was short, a bit chubby in that babyfat sort of way and totally lacking in self confidence. Her hair was mousy brown, her eyes were bluish gray, though no one would ever notice. Her breasts were large for her age, but maybe that was because of the chubbiness.
After she got home from college she would wait. Her father would call from work to make sure she got home from college alright and she would tell she was fine and then after she hung up she would do her favorite thing in the world.
Becky walked quickly and eagerly across the large house she shared with her father and older brother and clapped her hands together loudly. This sound awoke her dog Buster, a medium sized chocolate Labrador, who Becky had trained for the last 6 months about exactly what to do when he was alone with Becky.
"Buster, come on boy."
Becky waited at her door until Buster came galloping in and then she closed the door and let out a deep sigh.
"Hello Buster." She said sweetly as her dog walked rambunciously around the room already smelling the sex scent on her.
"Are you going to fuck me today, boy?" Becky said, reaching up and touching her right breast roughly.
As if he understood, Buster lunged forward and started stiffing and licking Becky's crotch, right through her jeans.
"Good... good boy, but hold on, momma's got to take her pants off."
Becky laughed as she tried to walk to her bed and almost tripped over Buster as he barked and tried to run between her legs.
"Ok, ok, hold on, boy."
In one quick motion Becky too her purple t-shirt off and flung it into the corner of her room. The slipped off her shoes and reached back to unhook her bar and tossed it into the same corner as her shirt.
Sitting on the bed she had to push Buster away three or four times before she unbuttoned and pulled off her jeans. Then she sat in only her pink and purple striped panties and her long white socks.
Buster starting licking her pale legs right away. Though her face had some pimples, the rest of her skin was blemish free, young and tight. She closed her eyes for a moment as Buster licked her leg, then thigh, then pushed his nose in-between her legs to try to part them. His tongue was just long enough to slip across the leg hole of her underwear once before she pushed him away again.
"You are a bad boy," she said in a sweet but somewhat huskier voice "getting me wet way too fast."
She stood up, pulled off her panties, pushing Buster away again and looked at the wall to her right. A full length mirror hung there at a perfect angle so that as she stood on the side of her bed she could see herself and Buster.
She smiled and her naked reflection smiled back.
"You're bad. You're a bad sick dirty girl. You're going to fuck the dog. Dirty sluty whore. Going to get fucked by this dog right in your cunt."
It was whispered, like a mantra.
She slipped her hand down between her legs and felt her smooth pink lips and the wetness there. She shaved it, because she saw pictures of slutty girls and that is what they did. Plus, she liked the way her chubby pussy lips looked in the mirror when they were freshly shaven and wet.
Buster moved in once Becky stopped pushing him away and started licking her fingers as she fingered herself. She soon moved her hand away and let Buster's long wet tongue do its magic.
First it slipped across the length of her slit, then it moved right in-between the lips which made her knees give a little. Then Buster just started licking furiously. Over and over again brushing against her clit just a bit more each time. Just when she thought she couldn't take it Buster stopped abruptly and jumped up on her, humping her leg. His cock starting to slip out of its sheaf.
Becky had to shake her head to break the spell she was in and then she pushed Buster away again.
"You gunna fuck me, Buster? You want me to be your slut?"
She kneeled down on the floor and leaned her body over her bed, facing to the left so she could see herself in the mirror. Her face and chest were red and her nipples were rock hard. She slapped herself on the ass, she could see her hand print in the mirror. She liked having marks on her.
She grunted as Buster jumped on her, putting his front paws around her leg and humping. He always missed the first few times. He would hump her leg and her hip. Becky reached back and pushed his body until he let go of one leg and put his paws on her back and then around her waist.
"Good boy, goood boy. Come on, fuck me."
She could feel his hard red cock hit her leg and then her inner thigh. Her heart was pounding, knowing what was about to happen. It was so bad, so dirty. If anyone ever found out her life would be over. She wanted it so bad, she wanted to feel his hard cock inside her. She wanted to feel that fast wild fucking her dog gave her.
His nails were trimmed, but they still left long red marks on her hips and back. She loved that. When she was in school she could feel the little cuts and the pain was enough to make her go to the bathroom and finger herself.
"Come on, fuck me. Fuck me fuck me. I'm a slut, I'm dirty. Fuck meeeee." she begged.
Slipping her arm under her, she reached back and was both able to rub her pussy and make sure Buster didn't ram into her clit, something that had happened before and really hurt. She could also guide his cock in if he got close enough.
Becky slapped her ass with her other hand and Buster barked. He fucked at her, but was a bit low. Becky arched her back and little and then it happened.
The thing about getting fucked by a dog is that it is a completely uncontrollable situation. There are no words at all, there are no games or insecurities or hurt feelings. There is just an animal with a cock and it wants to fuck you and it is going to fuck you as fast and hard as it can. You are just a tight wet cunt. Becky liked that a lot. Becky wasn't good at talking or seducing, but she was good at taking a hard fucking.
Once it started for real Becky's mind went blank. The world was just made up of that hard red cock fucking her tight pink cunt and Buster's paws on her belly and his weight on her and the building of her orgasm.
It was like an itch, a little electric itch that was getting scratched over and over again and then it was lightning in her brain. Buster's knot pushed at the lips of her pussy and she went over the edge. She had to concentrate to hold herself up, because once she came she could keep on coming as long as Buster kept fucking.
She didn't have to worry about the knot. She as too tight to take it, so far at least, and the feeling of it pressing against her was the thing that made her come the most. Well, that and the dirty feeling of being a dog slut.
The orgasm was a pulse of heat that made everything go away. All thought and all pain. When she was alone with herself, with her fingers on her clit, she would stop if it got to be too much, but now with Buster fucking her there was no stopping. It was too much, too much for too long, but he kept going until the orgasm became all she knew.
And in a flash he was off of her. He walked awkwardly away with his big knot and cock wet and still spurting come. He went over to her pile of clothes and plopped down and licked himself.
Becky just kneeled there, her chest and face on her bed trying to remember where she was. Her legs were shaking and her face was fiery hot. Come dripped down her thighs and covered her labia. It cooled very quickly making her shiver.
The guilt came after that, a dark little curtain that came down over her heart. But it would pass by the next day. Until then, Becky would wait.