F.l.i.d. Share definition Flag The opposite of having dilf energy. FLID stands for a "fucking loser I despise." I can't stand that asshole, he's such a f.l.i.d. F.l.i.d. by ARatInAHat July 30, 2021 0 0 Get merch Get the F.l.i.d. mug. Buy Now — $32.95 See more merch