Antonio has jumped gleefully into the hilarity of knock knock jokes.
We have a book full of kiddie jokes and he tests them out on me as we drive in the car.
Most of the time he's pretty good, sometimes it's painful.
Like when he doesn't know the word, so he spells it to me and before I know it, he's spelled the entire joke out to me, words separated by noting 'fingerspace'.
Like, " c-h-i-c-k-e-n-fingerspace-j-u-m-p-i-n-g-fingerspace-a-c-r-o-s-s-fingerspace..."
You get the idea.

So, I suggest he skip on to the next one, which he does very well.

"Knock-knock"
Whose there?
"Banana"
Banana who?
"Knock-knock"
Whose there?
"Banana"
Banana who?
"Knock-knock"
Whose there?
"Banana"
Banana who?
"Knock-knock"
Whose there?
"Orange"
Orange who?
"Orange you glad I didn't say banana!"

Peals of laughter, from both kids, in the backseat.

Then, a little voice chirps up,
"nak-nak"

Julia has jokes too