My friend Amethyst invited me over for a pool day but when we start to oil each other up we notice her step brother is watching us with his dick in my hand! we go over and ask him what he think he is doing but he just ends up getting more worked up and we have to do something about his hard dick. He fucks us next to the pool and Amethyst shows me how she knows exactly what her step brother likes and I try and make him happy to. Then he gives me a huge load that I share with his step sister.