Snail Charity

A man relaxes with his evening paper when he hears a light knock on the door. He opens it, looks down and sees a small snail.

"Mister, could you spare some change?" the snail asks. The man picks up the snail, throws him into the bushes and goes back to reading.

A year later, there is another knock at the door. It's the snail again.

"What'd you do that for?"