Watch out for that choking stuff, too. Folks have died with their air supply cut off. Wow, to each his own, I guess, but none of that appeals to me. I would call them "bizarre obsessions," too. I would hope, being an-old-lady-mother" type that this behavior will burn out over time. You are risking death, sure enough. Plus, that's NOT normal sex in most people's books. Thousands of people like it?How many billions of people wouldn't?