Straight male here. I voted “would to win a bet”, though I don’t usually french kiss women either. That’s the sort of thing that will get you talked about at family reunions. On the other hand, I’m very competitive when bets are concerned.
I’d have to pick the guy. Winning candidate must not be physically repulsive to me. Preferably just ate a mint. Must not be aggressive.
Money would be the motivating factor. The less repulsive the guy, the lower the price. The price will still be rather high regardless to get me interested. Specifically, there is no man alive, hunk or otherwise, that I would kiss for a simple hundred dollars.
No, I’m a whore, but I am a very expensive one.
Ok when I win the lottery I’m coming back to this thread and I’m going to have a LOT of fun 
Question: could you get around charges of prostitution by phrasing it as a bet?
Man: sees a lady of the night “Hello there! I bet you 400 dollars that you won’t have sex with me!”
LotN: “Hmm ok you’re on!”
later that night
Man: “Damnit, I was wrong. Ok here’s your 400 bucks!”
(I know we’re only talking about kissing here, but this idea popped up into my head with regards to the idea that I could “bet” you guys that you wouldn’t kiss me for some number of dollars)
Pretty much me, which leaves me unable to vote. I wish there was a distinction made in the poll between regular bets and impossibly large sums of money. Heck, a poll where you asked how much money we’d need to do it would be interesting.
I think even the $100 I’d do it for is an impossibly large amount of money for this situation.
EDIT: And that’s assuming both participants are straight and completely UNattractive to each other. Price goes up otherwise.
This is also me. Though it’s something I may want to try again (with my preferred gender) since everybody keeps saying how great it is.