Come on people, what is the worst thing you have ever done, vandalised or blown up or whatever?

For me, when i was about 12 and lived in Portsmouth, i egged someones house (i was a right little yob before i went to military school). However, my school has shown me the bright and beautiful area of blowing shit up and making fires....well it was good when i was 13/14, but the worst thing i ever did was when i was 11, with a few friends, we pulled down a tree, yes thats right a tree. Not a huge one, but fairly big. I am ashamed....your turn :-)