The hard-working centipede.

A man goes into a pet shop looking for a hard-working pet to do his chores. The owner says, “This centipede is the hardest worker you’ve ever seen.” The man buys the centipede. When he gets home, he says, “Centipede, go clean the living room!” Fifteen minutes later, the living room is clean. Next he says, “Centipede, go clean the kitchen!” Fifteen minutes later, the kitchen is sparkling. Then he says, “Centipede, go to the curb and get my newspaper!” After an hour of waiting, the man goes to the door and finds the centipede is still there. “Centipede, I told you an hour ago to go get my paper!” “I know,” the centipede says, “I’m still tying my shoes!”