So that's why!

My family and I were driving home from the Medina Corps tonight and my son, Jimmy (7) was reading some pamphlet on dolphins and the fact that they can't breathe under water. Well, eventually the conversation ended up with my daughter asking how sharks sleep considering that they have to keep moving in order to breathe.

An interesting question indeed. Any ideas? I had none. Jimmy, however, seems to have figured it out in short order. He declared that "they must not sleep, which would certainly explain why they are so cranky!" I haven't stopped laughing. I love kids. They can explain everything!