I'm a totally straight married man (The closet will remain completely shut), yet I have been fucked more times than I can remember. It's always with my uncle and I've let him fill my asshole with his cum, since I was about 17 (He's still fucking my asshole and did so yesterday morning). It's the only way I can ejaculate fully now, as I tend to dry cum inside my wife. It might sound strange, but I definately consider myself as a stright man.