Every time this thread is bumped I read it all the way through and all over again...

My niece has been into knock-knock jokes lately so I went and found some for her. My favorites:

Knock knock!
Who's there?
Delores!
Delores who?
Delores my shepherd

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

Knock knock!
Who's there?
Armageddon!
Armageddon who?
Armageddon cold out here, open up