Okay, I'll tell another one on myself.
One day I was in a dept. store and I heard a lady on the phone talking to her child and she asked if he was being good for the babysitter.
That was when I realized I could ask my AH if he was being good and strangers around me wouldn't know what was going on.
I bet in the last 12 years I have asked, "Are you being good?" thousands of times.