Billy has Blue Balls so he asks his hot little step-sister to JERK his DICK for him. Pretty little petite Petra has never seen a dick before. Well Billy just ruined it for the rest of us for life. Because he begs her to jerk him off and when she finally agrees he whips out his BIG FAT DICK and proceeds to shoot a GIANT LOAD of CUM. Hope she doesn't expect that every time.