At the weekend I had a visit from my sister and her husband. Anyway, I got ready early because I wanted to take passport photos. I was just doing my hair when he comes in and then also completely naked and tells me that he hasn't had sex in ages because my sister doesn't feel like it, she probably never really feels like having sex is probably frigid. While he talks to me he also gets a hard cock that made me horny and I fucked his cock nicely. What's wrong with that, basically I did my sister a favor and it stays in the family.