Grimace painfully while smacking your forehead and muttering, "Be quiet! I can't concentrate! STOP TALKING TO ME!!"
Ask if you can push the button for other people, but push the wrong ones.
Stand silently and motionless in the corner, facing the wall, without getting off.
Stare, grinning at another passenger for a while, and then announce, "I have new socks on."
Stand really close to someone, sniffing them occasionally.
Hold the doors open and say you're waiting for your friend. After a while, let the doors close and say, "Hi Greg. How's your day been?"
Stare at another passenger for a while, then announce in horror, "You're one of THEM!" and back away slowly.
