I have made this mistake too many times. I wore khakis and a navy polo shirt to Wal-Mart. During my crusade to find and buy Madonna's Hard Candy, I inadvertently showed up looking like one of the retail chain's employees. Don't do this if you can remember to avoid it.
My blunder didn't hit me until I checked out. The person behind the counter had a blue shirt on, just like me. Blast it.
This is the kind of quirky hijinks I experience in my day-to-day living.