You found your step sis porn with a big black cock and are jerking off over it when she walks in your room and catches you. She gets turned on by it and starts to touch your dick. Then she decides to give you a challenge and see if you can last as long as the bbc did, starting a timer and spitting all over your cock to jerk it off. Deep throating and tit fucking until you eventually cum in her mouth but ssshhh don’t tell mum and dad that you’ve just had your cock sucked by your step sis!