My first job was scaring tourists and generally acting the fool at the York Dungeons in.. erm... York. It was great. I learned that bleached blonde girls are the most fun to pick on because they love the attension and therefore provide most entertainment for the others. I lost my voice pretty much the whole time I worked there and it was minimum wage but seriously, when your job includes waving an axe around and making little girls cry, the money is almost a bonus. I couldn't believe I was supposed to be insulting the customers: "This way baldy, into the torture chamber."
Then I was a Hospital porter, which was weird becuase it was a complete reversal of roles. My job went from being a nasty, rude, leering freak to being the friendly, caring and comforting guy who takes you into surgery. It was so tempting to lean into somebody's ear just as they go into the anesthetic room and say "Oh, he's not technically a real docter. Butcher by trade. But he's so... eager!"