Fin-ished With Your Work

Alright, listen up, you smooth-brain. This "joke" plays on the word "finished." But get this, it sounds like "fin-ished," as in, related to a "fin" like a fish! So it's like asking a fish if it's done with its job. Bet you didn't know that fish don't have jobs! Oh, and you probably still believe in the tooth fairy, don't you?