And the jokes begin

While we were in Chicago, I taught the boys a joke I heard on Yo Gabba Gabba. It goes like this.

Knock, knock.
Who's there?
Interrupting cow.
Interrupting cow --
MOO!

Get it? The interrupting cow inter-- nevermind, you get it. Well, the boys LOVED it and were telling it over and over at the dinner table that night. All of a sudden I hear a small voice say "gock, gock, mommy." And there's my little big girl smiling broadly, patiently waiting for my "who's there?" Here's her version.

Gock, gock. (complete with knocking motion)
Who's there?
Cow.
Cow who?
::pause::
MOO!

I love it and will happily play along while she tells it over and over and over again.