I was a deviant uncontrollable tomboy for a few years... saw my Dad for the first time in years a few weekends ago, and of course he had to drag up some of the stupidest things I ever did when I was young most of them with my tearaway of a little brother. But in retrospect, the worst one was: Tampering & removing signalling equipment on a rural suburban rail line which caused the disruption to services on that line for the next two days. It was written up in the local newspaper and when my little brother eventually squealed, we both had to go to the main railway stations engineering dept. with the parts that we had (unfathomably) kept and apologise... I was 11 and that virtually cured me of my errant ways. After thinking on this for a while, I thought it would make a good (and possibly funny) thread, so... What's the stupidest and downright most evil thing you ever did as a kid? Did you get caught? And what was the eventual outcome?