Knock knock. Who's there? Wire.

Wire who? Wire you not opening the door?

Knock knock. Who's there? Fig.

Fig who? Fig-ure it out yourself, I'm busy!

Knock knock. Who's there? Isadore.

Isadore who? Isadore a lock on this door, or is it just glued shut?

Knock knock. Who's there? Sew

Sew who? Sew long, I've been trying to weave a good joke.