fhyg Share definition Flag An acronym standing for "Fucking Hate You Guys". Mostly used in text speak when someone's friends do something unpleasant to them. *Jim gets Rick-rolled by his friends while online*Jim: Fhyg, you're all such ass-holes. fhyg by Dmitrivich March 9, 2011 0 0 Get merch Get the fhyg mug. Buy Now — $32.95 See more merch