When I was 3 I had this kiddie tool belt with real small tools (Hammer, and ruler/level), so one day when I had it on, my sister tried to take it from me and I hit her lightly on the head with the hammer, dropped it, then ran. Also when I was 7 my sister had a sleepover with some friends, and at night (9pm/10pm area) they began to watch silent hill, and naturally being curious I went to see what they were doing, (now my sister had one of those beds with an elegant head and toe barrier design) when my sister told me to leave I simply crouched and closed the door and luckily one of her friends was leaning against the toe barrier of the bed, and as the music in the movie began to escalate I slowly creeped up to the backside of this friend and abruptly grabbed her shoulders and went "AAAH", afterwards I ran downstairs with a smug smile, down to my mother. The next morning I was told that her friend leaped off the bed and broke a mirror pane that was leaning against a wall, but she wasn't hurt... badly.