HFYW Share definition Flag “HFYW,” an acronym for “How Feels Your What,” is another term for “what’s up?” or “how are you?” It is popular with millennials. “Hey Jessica! Miss ya! HFYW?”“Reginald!!! How feels your what, dude?” HFYW by glorbbbb November 2, 2018 0 0 Get merch Get the HFYW mug. Buy Now — $32.95 See more merch