Knock knock. Who's there? Repeat.

Repeat who? *sigh* Fine. Knock knock.

Knock knock. Who's there? Hearse.

Hearse who? Hearse a real groaner for ya: I used to be a baker, but I couldn't make enough dough to roll with the big timers!

Knock knock. Who's there? Just me.

Just me who? What do you mean 'who'? I'm the person standing right here!

Knock knock. Who's there? Egg

Egg who? Egg-cuse me, I'm cracking under the pressure to make a good pun.