The Most Obscure Joke in the World

Happiness is Mandatory by Doug X

My math joke article for the Daily rcvd far more love than I was expecting so I thought I’d try another joke that is decidedly only for those with a rarefied sense of humour that verges on the arcane.

This one is sort of a logic joke, sort of a set theory joke, and maybe just not all that funny ;) It goes like this