I posted this last year and thought it was hysterical but had forgotten all about it until I saw it again at SFSignal. The Younger Son gets it, but The Daughter, sadly, says, "It's just not that funny." But it is! It is that funny:
I think if Jonathon Coulton had never done another thing, this work of art would still qualify him as a member of the genius clan, but he has done more.