"Massively Kewl Knock Knock Jokes!!!" joke

Knock, knock
Who's there?
Sorry, wrong door.
Okay.
Knock, knock
Who's there?
Federal Express
Federal Express who?
I don't know. I just deliver packages.
Knock, knock
Who's there?
Tom.
Tom who?
Tom Buchanan.
Hi Tom.
Knock knock
Who's there?
Pizza delivery guy.
Pizza delivery guy who?
You ordered a pizza?
Yes.
I'm the guy delivering it.
Great.
Knock knock
Who's there?
Susan.
Susan who?
Susan Caldwell.
I'll be right out, Susan.
Knock, knock
Who's there.
You might be a redneck if… you think tobacco is a vegetable.
You might be a redneck if… you think tobacco is a vegetable who?
I thought this was a redneck joke.
Nope. It's a knock, knock joke.
Oops.
Knock, knock
Who's there?
Boo
Boo who
Don't get so upset, crybaby!
What?
Ha! Ha! I made you say "boo-hoo