spaghetti milkshake Share definition Flag A Red gooey barely edible substance. Mostly found in the fridge of a stoner. "Damn that drink is as gross as a spaghetti milkshake" spaghetti milkshake by Owlcutyou July 3, 2014 0 0 Get merch Get the spaghetti milkshake mug. Buy Now — $32.95 See more merch