Knock, knock

So, I may be horribly behind in posting, but today I heard that Aidan has told his first knock-knock joke, and I need to remember, not solely to taunt him with it later.

Knock knock.
Who's there?
Cats!
Cats who?
The cats don't live here anymore! (hysterical giggling)

Maybe the joke's so sophisticated that it's over all of our heads. Perhaps it's brilliant and we're too slow to catch on. Perhaps.