Find some goodies to boo other people with. Along with these goodies, leave at least one sign for each person to put up immediately. If you have more copies, give them away to keep the game moving quickly and limit excess paper use and printing.

Pick at two (or more) friends or neighbors who haven't been booed yet and during daytime hours, leave your surprise outside their door, knock, and GET OUT. DO NOT BE SEEN...

Make sure their we've been booed sign is on their door soon after they've taken in their gifts. Leave your own booed sign up through October 31.