I've stolen a couple of things on a just-to-see-if-I-could whim.
In college I was studying in a diner and walked out with a...fork.
Much later I attended a bioethics conference in San Francisco and walked right out the hotel lobby doors with a water goblet in hand.
About 10 years ago I called my mom a "moth." I thought it was a funny wordplay on "mother." It was my way, at the time, of letting her know that she was bothering me. She is a clever, wonderful woman, and I didn't really mean it. I was immature and impolite and dumb. Anyway, I feel bad about it, but I still think it's pretty funny, in a sick sort of way.