Knock knock. Who's there? Wire.

Wire who? Wire you not opening the door?

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? Maple.

Maple who? Maple syrup to talk to you, I've been feeling a little stuck.

Knock knock. Who's there? Marmalade.

Marmalade who? Ma'am, I'd like to spread some cheer with a joke that's jam-packed with puns!