Knock-Knock Jokes for a Two-Year-Old

That moment when you realize you should’ve taught your toddler something months ago:

That’s how I felt when I realized my two-year-old didn’t know any good jokes.

I decided to start with something basic. Something timeless. Something with puns. I decided to start with the knock-knock joke. (I’m assuming that knock-knock jokes are timeless, but I suppose a time could come when we no longer have doors, or knocking, or not knowing who’s there, or not asking, “Who’s there who?” I digress.)

But searching for “knock-knock jokes for kids” brought up some knock-knock jokes that were at more at the level of the three- to five-year-old. I was looking for something more basic. So, I pared them down and made up some knock-knock jokes for my two-year-old. Here are some of his favorites:

Knock, knock!
Who’s there?
Lettuce.
Lettuce who?
Lettuce in!

Knock, knock!
Who’s there?
Orange.
Orange who?
Orange you gonna open the door?

Knock, knock!
Who’s there?
Police!
Police who?
Police let me in!

Knock, knock!
Who’s there?
Leaf!
Leaf who?
Leaf me alone!

Knock, knock!
Who’s there?
Apple.
Apple who?
Apple-ease a-let me in! [In a horrible fake Italian accent. On second thought, maybe this one is inappropriate.]

Knock, knock!
Who’s there?
Red.
Red, who?
Reddy to let me in?

Knock, knock!
Who’s there?
Ben.
Ben who?
Ben waiting out here forever!

Sometimes I make them up as we go. And sometimes he has requests. “Who’s there? Purple!”, he’ll say. And I’ll be purpl-exed (get it?). He also says, “Who’s at the door?” instead of “Who’s there?” sometimes and I just melt from all the adorableness.

So, what I’m asking here is, got any good knock-knock jokes?