No cross dressers, scat, pain, blood, fisting, and I'm BIG on good hygiene. Even in the 1960s and 1970s I'd rather suffer the pain of having the top third of my cock strangled by a condom (they seemed to only make one size) rather than risk getting my cock covered with shit when fucking a guy. I'm not into bondage. And my nipples are not connected to my sex/pleasure center.
As for getting fucked, I up to the task but it's only been good -- actually great! -- with two men I've ever known.
But there have been a some times that group water sports made sense while writhing around in an oily pig pile on the beach. The ocean was just a quick run to clean up.