It's a toss up between bungee jumping illegally off a bridge two times in a row and losing my scuba diving partner and ending up at 125 feet by myself on our first solo dive sans instructor (we were supposed to stay above 60 feet). I panicked and could have died if I came up too quickly but luckily eventually found my partner and calmed down and came up slowly.

I loved taking risks but can't do those things anymore now that I have kids!

What about you?