OMFGIWTKY Share definition Flag Oh My Fucking God I Want TO Kill You. Said when someone makes you really mad and pissed off. "Is Tokio Hotel, like, i dunno, gay or something? *pops gum with a blank face* "....OMFGIWTKY" OMFGIWTKY by IsabellaFrancesca February 15, 2009 0 0 Get merch Get the OMFGIWTKY mug. Buy Now — $32.95 See more merch