Appropriate? I'm certified!

"You know," I said to the sweet clerk who was taking my money, "in my long life this is the only time I have been certified to be appropriate."

She laughed, and in widening circles around her the other clerks in the office turned their heads and laughed, too.

Maybe it had something to do with my hot-pink T-shirt, or maybe it was just the loony notion of being certified for "apppropriateness," which they do every day but probably don't think about a lot.