Didn't get in trouble, as we didn't get caught, but at uni, a friend of a friend had just finished their final year, so we broke into the English department and stole some headed notepaper, and then wrote to said friend informing him that his result was borderline and he'd be having viva...
I stole a bounty from a classmates locker. A mate saw me do it, and dobbed me in. Teacher (fit Mrs Little) stood me in front of the class, pulled down my trousers and spanked me. Happy days.