Starch in your Shorts

Grampa and Billy were working out in the garden. Grampa spies Billy trying to put a worm back into the ground. "You'll never get that worm back in his hole," said the old man. Suddenly, Billy had an idea. He ran into the laundry room and came back with a can of spray starch. After a few sprays, the worm was as stiff as a board and Billy was able to slide him back into the earth. "Billy! You're a genius," exclaimed grampa. He hugged Billy, gave him a dollar out of his pocket, grabbed the starch, and ran inside. Thirty minutes later, grampa comes back out smiling. He gives Billy another dollar. "Grampa," said the boy, "You already gave me a dollar." "No," replied grampa, "That dollar's from grandma!"