This snail crawl's up to this bar as it was being closed. The snail pounds and pounds on the door until the bar tender finally opens the door.
Bar tender looks around and sees nothing until the snail demanded a beer.
The bar tender looked down and sees him but replies, "Hey, we're closed now and besides we don't serve snails!" and then proceeds to slam the door.
The snail again pounds on the door until the bar tender got so frustrated that he opened the door again and kicks the snail away.
A year later as the bartender was about to close again, he hears a pounding on the door again. He opens the door and looks down to see the same snail again.
The snail looked up and replies, "What'd you do that for?"