Huh, just week ago one of my friends told me the joke:

What BDSM and D&D have in common? Never enough dungeon masters.

I think he wanted to suggest something to me but i'm long past playing D&D and he won't make me go back. I also told him he's a filthy revisionist because no way i'm getting into weird theory combinations like Bakunin-Deng-Stalin-Mao syncretism.