I usually wait until my wife is in the middle of the aisle and I am hidden from view before letting rip.... so her reaction is more like a deer caught in headlights.
One of the best things to do is let one rip in the middle of an aisle then slip out to the end and wait for someone else to walk through it.
My ex did that exact same thing while I was beside him in a grocery store. Of course people were coming my way when he did it so he timed it just right. Thought I was going to kill after I stopped laughing. Sherry P.S. OyVay is not my ex!
The worst was the day before Thanksgiving at eh Food Lion at exit 319. People had packed carts and were lined up down the aisles when someone dropped a gut. It was horrible! http://www.youtube.com/watch?v=GXod1JglqdU
That my friend is called a drive by. When you are in your office and you have 3 to 4 cubes or offices and you have a walking fart....that's called a crop duster.
The Burning Brakes Fart - A silent fart identified by odor alone. Usually and adult fart, occurring while the adult is driving a car or has a front seat passenger who farts. The Burning Brakes Fart actually does smell a little like burning brakes, and seems to hang around longer than most farts Which gives whoever farted a chance to make a big show of checking to see if the emergency brake has been left on. When he finds it hasn't you know who farted. A common automobile fart.
Cruel and unusual punishment, especially if they have cloth seats that can soak up the smell as it will be the gift that gives for days that way.