Guapanian Share definition Flag Word used to describe somebody who is of dago,wop, goombah, or lasagnian ancestry. Also see; Guido. Greaseball. Samantha is a Guapanian. She loves lasagna and spastagetti and meatballs. Guapanian by jman3000 February 6, 2007 0 0 Get merch Get the Guapanian mug. Buy Now — $32.95 See more merch