Beauty Contests
If you actually thought I would put something about the beauty contests, you are sadly mistaken.
Actually to have fun with people, if they spam the trading post or chat boards or neomail you, asking you to vote for their stuff, I usually vote for someone else, then neomail them telling them I did so. It's kinda fun . . . and since neopets was made to have fun, you can do it too if you enjoy that sadistic sort of thing.