Friganasty Share definition Flag Friganasty- when food or an item is placed in your (energy drink) and you can't describe the taste but you know it's bad. Dude!!! what the hell was that you just gave me. It is friganasty... Friganasty by Woodysnirvana February 11, 2010 0 0 Get merch Get the Friganasty mug. Buy Now — $32.95 See more merch