the funniest joke EVER

Simon: Knock Knock

Mom: who's there?

Simon: Lucy

Mom: Lucy who?

Simon: when Lucy laughed it made my skin fall down!!

I laughed so I hard I cried. This was his attempt at retelling a joke that he heard from his older brother (who first heard it from Nana M.) The original joke goes like this...

Knock Knock
Who's there?
Lucy
Lucy who?
Loose elastic makes my pants fall down.

Dear Simon is lagging behind in the humor department. We have faith he'll catch up, as Chas was there until recently. Chas is at a point where he realizes what is funny and what isn't, and even a little bit of why things are funny.