So many.

When I was five my mom told me to look for my brother. I wanted to run really fast so I bent my head like sonic and ran straight into a concrete step. My head cracked open and some people claim they saw my brain. Got a sexy scar out of it though.

Last year I decided to help some friends shoot a video for a school project. Somehow we ended up burning down a playground and then I realized I never set up my camera properly so no video.

lol

i cut off a cop whilst driving on a suspended license.

Haha, epic!

Dumbest thing I ever did is not trying in my last year of high school. I ended up with only a 71% average because of it. I should have easily been 80% or higher.

I flunked kindergarten =D

A kid once gave me 50$ to glue my naked butt to a parking meter that a cop was parked next to. In my defense 50$ is a crap ton of money when your 7.

Edit: actually that probably isn't the worst thing i've done before.

Launched a bunch of bottle rockets at the police station. I suppose it would only have been dumb if I got caught..

when i was 12, i wanted to know how my armpits would smell if i sprayed citrus air freshener on them (even though the label clearly stated avoid direct contact with skin :D)

needless to say i was in the shower within 30seconds sobbing and praying to god to rid me of the pain. not a pleasant experience :D

also: i went through this stage where i would walk around with my eyes closed, and incidentally ran into a utility pole.