After church, Johnny tells his parents he has to go and talk to
the minister right away.  They agree and the pastor greets the
family.

"Pastor," Johnny says, "I heard you say today that our bodies
came from the dust."

"That's right, Johnny, I did."

"And I heard you say that when we die, our bodies go back to
dust."

"Yes, I'm glad you were listening.  Why do you ask?"

"Well you better come over to our house right away and look under
my bed 'cause there's someone either comin' or goin'!"