plaquefetus Share definition Flag Whiny, self-infatuated nerd; usually scrawny and/or short. I knew he was a plaquefetus when he sent back two dinner plates because they contained dark meat chicken. plaquefetus by eyeeneearrteeeyeayseeaygeeee September 5, 2008 0 0 Get merch Get the plaquefetus mug. Buy Now — $32.95 See more merch