What is the kinkiest thing you want to do but don't have the guts?

I was reading an earlier thread asking what is the kinkiest thing you do. I realized that there are people far more kinky than myself. I wish I had the guts to do some of these things. I travel a LOT for work all over the US so I have tons of opportunity, but I tend to chicken out.

I like anything anal, however I have rarely experienced anything with a partner. I have dreampt of putting an add up inviting anyone male or female to come to my hotel and basically use my ass. Let them line up all night and enjoy.

I know it's very dangerous. That is the primary reason I wouldn't do it, but it would be exquisite.

I have many other kink ideas where I'm in control as well. I guess I'm very versatile. Am I the only gutless person here? Do you have a kink that you chicken out on? Please tell!