What The Bluc Share definition Flag A variation of the phrase "What The Fuck," that is meant to be drawn out as in : What The Bluuuucc Steven: Mikey just hit a homeless guy on the head with a rock.Bryan: What the bluc! What The Bluc by Lou e May 18, 2010 0 0 Get merch Get the What The Bluc mug. Buy Now — $32.95 See more merch