step-Sis Finds Your Taboo Porn

Your little step-sister has been borrowing your laptop, and when she returns it to you she sits down with a gleam in her eye, asking you if you remember that time years ago when you walked her through how important it is to clear your browser history frequently.... Your heart begins to race as you realize what she's alluding to, and you blurt out excuse after excuse as she lists off all the interesting videos she saw you've been watching! You try to convince her that you must have been scammed, you would never watch that kind of stuff, but your step-sister challenges you by slowly stripping off, saying that surely you'd tell her to stop, if it really wasn't you watching those videos... Surely you'd stop her and tell her to get out of your room, not watch frozen and staring as she gets naked and plays with her pussy right in front of you! You can't tear your eyes away, even as you weakly protest that it wasn't you... But the growing tent in your pants only eggs her on! Soon you can't help it and you pull out your cock to stroke it, making your step-sister grin as she fingers herself, knowing she's won....