shut the fuck up milk Share definition Flag What you say to your friend who looks like Milk from Big Mouth when he says anything mildly stupid. “Hey guys! Want to see my long Brazilian shlong? “Shut the fuck up Milk.” shut the fuck up milk by Christian Chernoff January 12, 2021 0 0 Get merch Get the shut the fuck up milk mug. Buy Now — $32.95 See more merch