Lavacate Share definition Flag When a covered carbonated or dairy-based beverage spills from the top of the cup lid, resembling lava gushing out from a volcano. Sip your ice cream shake, Denny, or your drink will lavacate from the lid Lavacate by locksmith_bobby June 12, 2011 0 0 Get merch Get the Lavacate mug. Buy Now — $32.95 See more merch