Anyone have good knock knock jokes

[sanpet]

At work we got it the who can bring the dumbest but best knock knock joke?  Anyone have any?  This was mine:

Knock knock

Whos there

Nana

Nana Who

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...

...

...

...

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Nana your business!

[Wanda V]

Knock knock

whos there?

Justin

Justin who.














Justin in time to submit this stupid knock knock joke.

[msmarieh]

What can I say? I'm easily amused.


Knock knock.
Who’s there?
Cows go.
Cows go who?
No silly, cows go moo.
 


Knock knock.
Who’s there?
To.
To who?
To whom!


Knock knock.
Who’s there?
A broken pencil.
A broken pencil who?
Never mind, it's pointless.


Knock know.
Who’s there?
Theodore!
Theodore who?
Theodore wasn't open, so I knocked!


Knock knock.
Who’s there?
Little old lady.
Little old lady who?
I didn't know you could yodel!