BYE Share definition Flag Used as a responding word, like "lol, "lmao" and "omg I can't even". Figuratively meaning that your leaving, like you can't deal with what has been said. Requis: "Sometimes I wonder when you'll stop saying "BYE"" Felicia: "OMG BYE" BYE by moistpossum December 3, 2016 0 0 Get merch Get the BYE mug. Buy Now — $32.95 See more merch