I was browsing my Facebook feed recently, when I came across this Christmas diorama some beautiful bastard installed on their front lawn:

via Facebook

This is, of course, a reference to a parody of the song "Jingle Bells" that roughly 100 percent of you encountered at some point during your childhoods.

Jingle bells, Batman smells

Robin laid an egg

The Batmobile lost a wheel

And The Joker got away

If you grew up anywhere in the English-speaking world (and quite a few places outside it), you heard some version of this parody as a kid. I don't even remember when I heard it for the first time, but I've talked to people in their 40s and 50s who recall learning it when they were kids. This is a joke children have been telling for generations.

So, where the hell did it come from?