Knock knock. Who's there? Maple.

Maple who? Maple syrup to talk to someone, I'm feeling a little drained.

Knock knock. Who's there? Parenthesis.

Knock knock. Who's there? Fig.

Fig who? Fig-ure it out yourself!

Knock knock. Who's there? A man with a

manuscript for a knock-knock joke, but he's struggling to come up with a decent punchline, and honestly, it's just getting a bit meta at this point.