i can crow just like a rooster (i've tricked people and other rooster and made them thin i was a chicken when they couldn't see me)
i like to crow any where any time! i have challenged pheasant cocks before with my crow!
When in public and someone else is being obnoxious or annoying to all, get right in front of them or otherwise nearby in line of sight, and stare intently while grinning as hard as I can. This amazingly works to shut up or drive off all types of nuisances - soap box preachers, drunks, arguing couples, loud music or cell phone users... I have shamelessly used this in restuarants, lines, public transportation, etc.
Random misbehaving children get the momma stink eye from behind their parents back. Or absent parents, and stink eye ineffective, a casual comment about store managers or grandmothers or something. Crying babies and crying small children get outrageous faces made at them from behind the parent's back.
and when speeding down our road at the old house got ridiculous, I DID sit in my car, with the fancy Scouting hat on, with a black hair dryer in my hand... amazing how that works.
Ramble, skulk, scurry and otherwise amble through the mega store, peeking around corners with your (two hands together, index fingers up) 'gun' to your chest while humming The Batman Theme Song.
Edit... see you mentioned the MI one... but me I prefer the Batman one... donno why. Not like Batboy comes around corners with a gun... oh well.
Also taking time to ride the buggy down the aisles should NOT be missed... especially if you manage to get to the store without the kids... then you'd be a bad parent... but since it's only OTHER people's kids that see you you are merely a bad influence.
Dress as strangely as possible and go into a busy store carrying a box with a pineapple in it. Go up to random strangers and ask if they want to see what's inside the box (extra points if it's in a strange voice or a strong lisp). If they say yes, thrust the pineapple in front of their face and say, "This will selfdestrust in ten seconds" and count down. When you reach one, run away.