This morning The Mommy and I were waking up the boys and Pit perked up very fast and said,

"Mommy, I have a joke."
"Ok, what it is?", The Mommy said.
"What's your name?", he said.
"Mommy"
[short pause]
"Now you say 'What's your name?'"
"What's your name?"
"[Pit]"
[another short pause]
"Where's the funny part?"
"I don't know.", he says in a sleepy voice.

I think he woke up too fast and had something else running through his head but just couldn't remember it.