Flabbermonkey Share definition Flag A non amazing animal, that is mentally stupid. Its very very offensive all across the world Dude, that kid Curtis is a flabbermonkey, he so LAME Flabbermonkey by Ashketchemisamazingandhott November 3, 2011 0 0 Get merch Get the Flabbermonkey mug. Buy Now — $32.95 See more merch