What is the wildest thing you did on a dare?

I once ran naked through a park at dusk... only to realise, in my drunken stupor, that it's best to ensure your clothing (or at least SOME clothing) is on the other side once you reach it... this fact facilitated another dash back across the park... to mostly (thank God) laughter. Ah, to be 17 again! :)

mine probably was when i got dare to make out with a guy behind a curten and i was told that it was my high scholl crush so i did and when the lights came on it was my best friends brother it was so bad!