Sounds like a bunch of sensationalism since no one will actually explain what this is. Just links to Tweets and cartoons.
A practioner draws on a wall with blood, semem, and/or breast milk. I’m not sure if this occurs while at a dinner, or whether this concoction IS the dinner. And I’m not sure who donates the bodily fluids, the practioner, the guests, both. I’m not sure if there is a universal goal, or if the goal is particular to each occasion. In any case, after hearing about the bodily fluids bit, what more do you need to know?
Oh, I forgot. The Museum of Modern Art in NYC recognizes it. Nuff said, eh?