This dude has a problem with his knee and he can barely move it at all. His 18 year old stepsister wanted to take a look at it to see if she can relieve some of the pain, but while she was checking out the knee, the stepbro ended up being completely hard. He got hard and he didn’t know what to do about it. The stepsister thought it was gross that her brother got hard but at the same time she was quite impressed by the size of it. The little slut pulled down the shorts to take a look at it after he allowed her to do it and she was absolutely stunned that a cock can be that big. It wasn’t long after that and she started stroking it with her small hands and getting ready to suck on it. She continued to lick the head of the step brother’s prick with her tongue and lips. The girl sucked him off really well, and in the end, it seems that she really did relieve some of the pain from his knee since he felt a lot better. They both took their clothes off and took it to the bedroom. He lied down and the naked girl jumped on his cock and started slamming her young wet pussy down on him. She jumped on it from the front, but she also jumped on it and rode him reverse cowgirl style. His pelvis was slamming into her cute little ass as she rode him. His sister got the chance to do whatever she wanted with him since he was the one lying down. It turns out that he did it so well that he felt no pain and he could fuck her doggy style as well which he then did. Grabbing her waist with both hands he pumped her with full force. The naked girl began twerking her ass onto his dick as he slammed up into her pussy from behind.