I thought I was the only idiot who put his hand into the mouth of a large animal. We have a game we play. (Well, I think it a game, she probably thinks me the moron that I actually am) I present her my fist, and she clamps down hard. Like bone-breaking hard. I present a flat hand, and she gently - gently, clamps down.
And I am hers.
She is not really Zoo, but she tolerates my, uh, wanderings. It's not like I'm going to get her pregnant, just a good fuck will do.