Joke: How do you catch a squirrel?

Joke: Knock knock!
Who's there?
Rufus
Rufus who?
Rufus the most important part of your house.

Joke: Knock knock!
Who's there?
To
To who?
No, it's to whom.

Joke: Knock knock!
Who's there?
The KGB
The KGB...
*slap* The KGB will ask the questions here!

Joke: Knock knock!
Who's there?
A little old lady.
A little old lady who?
Woah, I didn't know you could yodel!

Joke: Knock knock!
Who's there?
Tank.
Tank who?
Your welcome?