Knock-Knock Who's there? A little old lady. A little old lady who? I didn't know you could yodel!

Knock-Knock Who's there? Apricot. Apricot who? Apricot my key, open up!

Knock Knock. Who's there? Are you, Are you who? Are you going to let me in or not?

Knock Knock! Who's there? Who! Who who? You must have the stammers!

Knock Knock Who's there ! Banana ! Banana who ? Banana split, so ice creamed !

Knock, knock, knock! Who's there, i' th' name of Beelzebub? Here's a farmer that hanged himself on the expectation of plenty. Come in time, have napkins enough about you, here you'll sweat for 't.

Knock-knock? Who's there? Little Boy Blue! Little Boy Blue Who? Michael Jackson! If you don't get it, read the title. If you still don't get it, pm me. If you STILL DON'T GET IT, you're an asshole

Knock Knock ! Who's there ? Bless ! Bless who ? I didn't sneeze !

"Knock-Knock" "Who's there?" "Boo" "Boo who?" "Why are you crying?"

Knock-knock Who's there? Boo! Boo who? Don't cry it's just a joke