You call your stepsister telling her that you're in town and something went wrong with you hotel. You need a place to stay for the night, and being the best stepsister that she is, she welcomes you over to her studio apartment. It's small and cramped, so she offers for you to stay in her bed with her. While you're changing into your pajamas you leave the door open and she sees everything! She is floored at how big your cock is! It keeps her awake at night and she can't help but masturbate to it while you're next to her. You catch her playing with herself and it makes you hard! She strips out of her pajamas and strokes you off while she rubs her pussy inside of her panties. You both decide to fuck, just this one time! Neither of you have a condom, but you don't care. You fuck your stepsister from behind and missionary. It feels so good and she cums so hard! She's not done yet though, not u til you cum too. She begs for you to cum inside her, and you do! It was so amazing that your stepsister asks to go again!