My step-sister found me completely naked in the hot tub out in our backyard. I watched her strip in front of me before getting into the tub with me. 'What are you doing?' I ask her before she completely surprises me by stroking my hard cock. I couldn't help but think of how wrong it is to be messing with my younger step-sister like this.. But it felt so good! She slides her tight perfect pussy down onto my throbbing shaft. Water splashes all around us as I pound her tight cunt! I slam my dick deep into her, thrusting in and out of her perfect little pussy. I finally pull out and blow my thick white load all over her lips!