Knock knock. Who's there? The sound of one hand clapping.

The sound of one hand clapping who? Exactly! You're not supposed to be able to answer that.

Knock knock. Who's there? An anticlimax.

An anticlimax who? Exactly.

Knock knock. Who's there? Nana.

Nana who? Nana your business!

Knock knock. Who's there? Byte.

Byte who? I'm having a little trouble processing your question.