re: What's the best practical joke you've ever played?

Long ago when I'd hardly left home my mom sent me a bunch of Easter candy. I was trying to lose weight and didn't want it. So I hid it in a friend's office. Everywhere. It drove him crazy trying to figure out why this was happening. His best theory was a one of the secretaries was interested in him. Nope. 4 years later he found another piece of chocolate. And he still has no clue.