Author's Note: All characters in this story are 18 or older.
***
It was midnight when Jen heard the door to her room open. She shoved her face into her pillow with a loud groan. "Not right now Dan!" She shouted into her pillow. "It's late and we have a test tomorrow! I for one want to graduate senior year." Her brother Dan ignored her and walked to the edge of her bed where he sat down and rested his hand softly on her back through the thick comforter.
"Come on sis, you know I need to masturbate before bed, it's the only way I can go to sleep and I have the same test that I need to wake up for."
"Can't you just go use mom?" Jen said, still talking into her pillow. She refused to come out of her soft and warm blanket cocoon unless there was no other choice.
Dan shrugged and said "Dad is fucking her right now and they don't like to share at night. Something something "respecting privacy and the privilege of marriage" and other such bullshit. C'mon sis, I will be quick just need to rub one out before bed."
Jen groaned one last time into her pillow before she finally flipped over and looked up at her brother. They were twins and the 6 months since they turned 18 taught her one very important lesson. When it came to fucking her brother was never, ever, quick.
"Dan if you could be quick I would just have raised my ass and let you have your way. But you and I both know you won't be satisfied until you fuck all of my holes at least once. Quick for you means we are done by 1am at the earliest and we both have to be up at 6:30! That's not enough sleep!"
"Look I know it's late but I was up studying! And you know I wont sleep well if I can't cum."
"Studying? Or playing video games. Cause I am pretty sure I heard Jeff on discord bragging about getting to claim Sarah over the weekends when I went to the bathroom an hour ago. I seriously doubt you guys were studying" She raised her arms from the covers and gave him air quotes for the word studying which caused the blankets fell away from her oversized d-cup tits that defied gravity with the power of youth.
They were her proudest feature and on her small and skinny 5'6 frame they seemed twice the size they actually were. Of course that immediately drew her brothers attention and Jen knew with a tinge of regret there was no way she was getting out of sex now. Not that there was much of a chance of it before.
Staring straight at her tits now that they were exposed Dan mumbled sheepishly "I was just taking a break!" Dan looked back up at her eye's and said "Look if I could just jerk it myself I would but you know the law. Masturbation needs a partner and you are the only cocksleeve available in the house right now."
Jen sighed and threw off her covers revealing the rest of her athletic and firm body. She was one of the star runners on the track team (mainly because it was the only free time she got without a cock inside of her as most of the track boys were not fast enough to catch her) and it showed in her toned legs and tight shapely ass. Her long blond hair cascaded over her shoulders as she leaned over towards him. Her sapphire blue eyes stared into his and her soft fingers wrapped around his already hardening cock.
"Next time just don't be so late to come and use me ok? You know how much I need sleep and it would mean a lot to me if you could be a bit more considerate in the future."
After saying her piece she wrapped her lips around the tip of his thick 9 inch cock and began to suck and lick him, starting her blowjob slow. She could still taste her mom on him from when they were having dinner.
Dan groaned in pleasure when she went down on him but seemed mortified when he said "You got it sis, I will try to go to bed earlier myself. I promise."
She doubted he would fulfill the promise but she had more pressing concerns. Mainly trying to deepthroat her brothers cock. He had one of the biggest cocks in school, especially in the girth department at almost 3 inches wide, and was pretty popular with the other girls as a result. That meant she didn't get to practice on him as much as she would like despite living with him. He was the only guy she knew that she still had trouble deepthroating.
"Fucking hell Jen. It's only been 6 months since we turned 18 and already you give the best fucking head in our class" Jen would have smiled if she could but her mouth was stretched wide has she fed inch after inch of him into her gullet.
She decided tonight was the night she would fit his entire cock in her mouth. She took pride in her abilities as a fucktoy and regularly practiced the cunt and ass exercises they taught in school to keep them tight as she could despite the large number of cocks she took every day. Her throat ln the other hand got practice all on it's own as most of the boys in school loved to fuck her mouth. She was one of the few who could already deepthroat regularly in their grade.
Dan took a handful of her hair in his fist and gathered it at the back of her head as he got ready to help her get him past that final hurdle. She felt her pussy begin to heat up in anticipation of the hard throatfuck she knew was about to receive.
"Ok sis, tonight's the night." he said and then he began to push, firmly but slowly. He tried to force her face into his crotch as she struggled not to gag around the monster filing her mouth. He hit the wall at around the 5 inch mark just as they always did but he didn't let up. He kept pushing despite her struggling and gagging. Seeing as she couldn't breathe with his monster filling her mouth and he wasn't bothering to pull her back she started to pass out but then finally he pulled her off of him.
"Wait I wanna try something" He proceeded to pick her up and flip her around until she was lying on her back with her head resting on the edge of the bed and then he stood over her his balls brushing against her forehead as he lined up his cock with her mouth again.
"Wait" she said "I don't know if this is such a go- Gack" Dan cut her off by ramming his cock into her mouth. He held up her head with his hand and said "This is what mom recommended when I asked her the other night how you could learn to take the whole thing. Apparently this is how grandpa trained her throat when she turned 18. She told me just to fuck your throat as hard as i could until i stretch you out enough that you can take it on your own."
Jen felt fear mixed with anticipation well up inside her as he began to slowly rock his hips back and forth. His cock never left her mouth but he moved his length in and out of her throat going a little deeper each time until he finally hit the wall where she couldn't seem to swallow him anymore.
Then he pushed. Hard.
Jen began to thrash under him as she felt her throat begin to bruise. She was worried he might tear something with his monster so she tried to get him to stop pushing and let her breath but he ignored her attempts. He just started thrusting hard and fast. Her thrashing and gagging got wilder as she felt herself start to black out but then she felt it. Something seemed to pop and suddenly his balls were resting on her face as the final few inches finally made their way inside of her.
"I finally did it!" was the last thought she had before she passed out.
She woke up to her body rocking back and forth as her brother plowed into her soaked pussy. He had not bothered to wait for her to come to and she found herself no longer on the edge of the bed but in the center of it with her head propped on a pillow and her legs spread wide. Her brother was firmly planted deep inside her.
"Finally woke up eh?" her brother said as he continued to thrust in and out of her. Fucking her at a relaxed pace. Jen ignored her brother and rubbed her now very sore throat with a sense of pride.
She did not bother to respond. Instead she just nestled back into the soft bed and pillows to enjoy the sensations running through her pussy. Her brother felt amazing inside of her as always. She was feeling sensitive from the excitement of having finally deepthroated her brother and she could feel the orgasm begin to build inside of her.
