Grampa and the worm

One day little Nicky is playing in the garden with some worms that he found in the soft dirt.
Grampa sees him and go over and tells him: "Nicky, I've got a game challenge for you...if you can put that little worm back in his little hole in the dirt without digging in a bigger hole I'll give you 20 dollars!!"
Nicky is obviously super excited and starts fidgeting with the worm to put it back in the whole, but the worm is squishy and wriggling his way off the hole all the time. After 15 minutes trying unsuccessfully to stick the worm in the hole little Nicky has a stroke of genius. He runs inside the house, get his mother hair spray, go back outside where grampa is looking at the whole scene, picks up the worm, hold it straight from the top, sprays it mercilessly with the hair spray and after a minute sticks it in the ground like a nail. Grampa is really proud of him and gives him 20 bucks as promised.
The day after little Nicky is playing outside again with his toy cars when grampa comes over and hands him 20 dollars saying "there you go sweetheart, because you were really smart solving my puzzle yesterday..." At which point Nicky objects: "but grampa, you already gave me 20 dollars for it yesterday....."
And grampa says: "I know, these are from granma......"