Milk Shit Share definition Flag An "unsaturated" person. A fake ass person that acts different all the time. "Ayo u kna Bobby rite?" "Yeah I don't fuck wit him though, he be on some milk shit." Milk Shit by justtheaveragejoe123 November 8, 2011 0 0 Get merch Get the Milk Shit mug. Buy Now — $32.95 See more merch