My sister used to fuck guys with big cocks. We were all at a wedding and her husband told me to come by their hotel room after the reception. I brought my wife with me . We were floored when we saw my sister getting fucked doggy and sucking a huge cock. My wife watched and started to rub her clit. My sister wanted my cock in her mouth so I looked at my wife who said ok. . I then stared fucking her and my wife climbed on top of my sisters face. My wife was like an animal . After my wife came she licked my sisters cunt as I fucked it. . Afterward my sister told us she has an agreement with her husband and that we can. Fuck all the time