Let her do what she wants
From Create Your Own Story
You nod, she clumsily grabs your shoulders, and pushes you down on her bed, and then sits up. She slides her skinny naked body down your leg so your dick is just by her lips. Your impressed by her skill,
"Damn, and I thought I was teaching you" you tease, and she giggles
"And I didn't realise your cock was so big" and that point she runs her tongue up your shaft and wraps her lips around the head and begins to bounce her head up and down, pushing your dick further into her mouth, all the time her piercing blue eyes kept looking right at yours.
You grunt, as you grab her head and push it deeper, till she loosen her lips and raises her head, with saliva dribbling of her lips, and your cock soaked in her mouth. This was a much needed break as a few more moments and you would've cum right then and there, running this opportunity.
"mhmhm You like your sister mouth don't you" she giggles and teases, while you look at her in slight shock. "what?" she says looking all innocent "I've given a few blowjobs, and watched enough videos to know what do."
"Clearly" is all you can manage.
"I think its time we put that were it belongs" as she said this she licks the shaft bottom to top and pushes your erection forward so that its on your stomach, and then runs it down her neck, inbetween her tits down her stomach right on her pussy. Where she rubs it up and down a couple of times, moaning as she goes. Then she squats ontop, and uses her hand to guide it in. You watch as your skinny hot 18 year old sisters, virgin pussy swallows your cock, as it clenches, and she moans, after the first four inches she began to bounce up and down, and on each downward thrust she got lower, and with each thrust her body lurched and she moaned louder and louder. Till she had managed to take it all which very few had succeeded to, let alone on their first time. She was clearly desperate for the sensation, you sat back and watched as your sister bounced ontop of your cock, and her small erect tits move in synchronisation not truly understanding what was happening, but not caring. you can't believe you've taken your sisters virginity.
Soon she was lent over you with her ass bouncing up and down even faster, and her small tits in your face, as she said
"You like your.... sisters pussy don't.... you, mmmhmmm, OMG YESSS it feels so.... good" she said breathlessly, "mhm right there... yesss...I think.... I'm gonna...." and in that moment her body seized, legs quivered, head was thrown back, and her pussy some how tighten even more as she came,as she moaned. Your dick was forced out as her cum drench your erection. She falls back sideways, saying nothing exhausted.
You lent over her back and whispered into her ear "Mhm you like that didn't you, you little slag? Did You like how you brother made you cum?", all she manages is nod. Knowing her pussy to be worn out, you get up to stuff your cock in her mouth, hoping she'll suck it, and regretting not cumming with her. You get up and head to the other side of the bed where Lizzy is facing and rub your tip on her lip
"What are you doing?" you freeze in dread she'll ask you to leave, "I don't want to suck you off," she sits up and looks up innocently and you large body standing over her, she spreads her legs and rubs her clit which was still cover in pussy juices "I want you to keep fucking me", you were a bit shocked but that was quickly overcome by your horniness, and realising she was exhausted, yet still horny you decide you need to take charge.