A man is sitting on his couch watching his TV when he hears the doorbell ring.
He opens the door, and all he can see is a snail sitting on his front porch.
He throws the snail across the street and goes back to watching TV.
A year later, he is again sitting on his couch watching TV when the doorbell rings again.
He opens the door to see an angry snail, who yells, “What the Heck was that for???