The fourth-grade teacher had to leave the room for a few minutes. When she returned, she found the children in perfect order, everybody sitting absolutely still.
She was shocked and stunned. "I've never seen anything like this before. This is wonderful. But, please tell me, what came over all of you? Why were you so well-behaved and quiet?"
From the back of the room Little Johnny piped up, "One time you said that if you ever came back and found us quiet, you'd drop dead."