A little boy and his grandfather are raking leaves in the yard. The little boy sees an earthworm trying to get back into its hole.
He says, "Grandpa, I bet I can put that worm back in that hole."
The grandfather replies, "I'll bet you five bucks you can't. It's too wiggly and limp to put back in that little hole."
The little boy runs into the house and comes back out with a can of hairspray. He sprays the worm until it is straight and stiff as a board. Then he stuffs the worm back into the hole.
The grandfather hands the little boy the five dollars, grabs the hairspray and runs into the house.