What's the stupidest thing you've done in your life ?

I don't really have too many of these moments to be honest, but some of them I encounter while I'm actually driving, lol.

While merging on the Highway, there was another person with a trailer that was going really slow, so I passed him on the shoulder, lol.  It was at night as well, I thought there were cops behind me and I go scared that I was about to get a fat ticket.  Luckily I didn't, and I never will ever do something like that again.