This is only the stuff which I consider to be bad:

Sleeping and playing with men and dumping them when they made me tired
Locking two unknown guys from outside in their trailer (I was 12 years old)
Taking rides on the roof of the elevator in a 22-story building (a popular entertainment for bad kids like myself)
Taking trains and buses without paying for tickets (in Russia)
Not paying enough attention (to say the least) to my high school studies
Drinking a lot (past)
Multiple phone jokes and other nasty stuff, like putting dog's poop into someone's shoose (as a kid, of course)
Making false papers in order to get free bus pass or permission to skydive (in Russia)
Unnecessary arguing, fighting, and so on (hope will be past soon)
Pushing people away by verbally hurting them (hope will be past soon)