In Their Little Brains

John got a bill in his class the other day. He was standing in line for the bathroom and out of the clear blue sky said, "What the hell?" He couldn't explain why he said it. No one poked him or pushed him. He didn't see something strange on the wall. The water didn't shoot upward out of the sink or anything. He just said it. Is there any way to get a little peek inside his brain and find out what he was thinking? What a goof!