Knock knock. Who's there? Silence.

Knock knock. Who's there? Fig.

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

Knock knock. Who's there? Sue

Sue who? Sue-per excited to meet you, it's a shoe-in for a new friend!

Knock knock. Who's there? Sew

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