Holler random numbers while someone is counting.
Adjust the tint on your TV so that all the people are green, and insist to others that you "like it that way."
Signal that a conversation is over by clamping your hands over your ears and grimacing.
Make beeping noises when a large person backs up.
Reply to everything someone says with "that's what you think."
Stomp on little plastic ketchup packets.
Specify that your drive-through order is "TO-GO."
Staple pages in the middle of the page.
Honk and wave to strangers.
Decline to be seated at a restaurant, and simply eat their complimentary mints at the cash register.
Buy a large quantity of orange traffic cones and reroute whole streets.
Ask people what gender they are.
Go to a poetry recital and ask why each poem doesn't rhyme.
Sit in your front yard pointing a hair dryer at passing cars to see if they slow down.
Ask your co-workers mysterious questions and then scribble their answers in a notebook. Mutter something about "psychological profiles."