Knock knock...

Our six-year-old loves making up knock knock jokes. It is a good way to delay bedtime, and also surprisingly easy when you don't need a punchline that makes sense (a recent example he made up: knock knock. who's there? pill. pill who? pillow! followed by maniacal giggling).

It's gotten so bad that our four-year-old wants in on the action (knock knock. who's there? lightning mcqueen. lightning mcqueen who? followed by maniacal giggling). And our almost-two-year-old (na na. who's there? maniacal giggling). So I guess what I'm saying is that I'm in constant need of knock knock jokes. And also little kids are funny.

From here. This joke's pretty good, but I'm not letting my kids see The Dark Knight anytime soon. They don't need to hear a real maniac laughing yet...