You are in your bedroom stroking off when your stepsister walks in and catches you. She isn't offended, instead, she is turned on! She puts the book she is reading down and turns her focus to you and your cock. She teases, taking her top off so you can play with her small, perky tits while she takes your shorts off to suck your cock. When she gets on top to ride your dick while looking at you with her pretty eyes, she grinds her pussy on your rod and makes you explode! You should have gotten caught wanking sooner!