Knock knock

As longtime readers of this blog may know, our family loves knock knock jokes. So it was a big moment when X told his first today:

X: Knock knock.
K: Who's there?
X: Knock knock.
K: Knock knock who?
X: Knock knock moo.

...It's a work in progress.

K came up with some pretty good "what do you get if you cross..." jokes this morning:

What do you get if you cross a nap and a pumpkin?
A napkin.

What do you get if you cross a ball and a pin?
A rolling pin.

Here are the knock knock jokes I came up with:

Knock knock.
Who's there?
Owlsay.
Owlsay who?
That's right, owls say hoo!

Knock knock.
Who's there?
Who.
Who who?
You sound like an owl!

And we were telling "guy walks into a bar" jokes the other day, which it turns out aren't that funny if you have to explain them to a 5-year old who then wants you to tell them over and over. Here's one I invented (which may very well be derived from another one I've heard somewhere):

A duck walks into a bar. He says, "One beer, please!" The bartender gives him a beer.
The next day, the duck walks into the same bar. He says, "One beer, please!" The bartender gives him a beer.
The next day, the duck walks into the same bar. He says, "One beer, please!" The bartender gives him a beer.
The next day, the duck walks into the same bar. He says, "Quack!"
The bartender says, "Oh, I thought you were going to say, 'One beer, please!'"
The duck says, "Are you crazy? Ducks can't talk!"

Thank you, I'll be here all week.