Throw newspapers back at paperboys.
Dress like a "High-class rich person" and wash windows at random street corners. Demand a dollar in a British accent.
Ask people to prove everything they say. (e.g. "I'm Bob, nice to meet you..." "PROVE IT!"
Call 911 and breathe heavily.
When in an elevator, in different voices, shout out random floors, and then watch as you get there, no one gets off.
Continuously open your briefcase or bag and say into it, "Have you got enough air in there?"
While going down in an elevator scream, "AAAAAGGGGGHHHHH!!!! WE'RE GONNA DIE!!!" for no apparent reason.
Page yourself over an intercom, but don't disguise your voice.
When walking push an invisible cart and make loud squeaky noises.
Walk up to random people and ask them, very seriously, "Do you know the muffin man?"
Look at your hand in amazement and say, "Whoa, I never knew I had this!"
While driving if you see a "How am I driving" bumper sticker, call the number and inform the operator that the driver is doing a great job.
When you're in an argument, no matter what it's about, keep yelling "I don't see your name on it!".
When in public, pretend you are selling something in an infomercial.
Walk around with a plastic sword and shield and tell strangers "I must avenge the death of my father."
Super Glue quarters to floors.
Get two cell phones and talk to yourself on them in front of other people.
these are getting annoying, arent they?