Flabbergassed Share definition Flag Being the victim of a loud and smelly rip originating from a huge flabby ass. Man, I was on the bus when I got an ass blast from some fat bitch. I got Flabbergassed, man. Flabbergassed by HavaBrain August 22, 2011 0 0 Get merch Get the Flabbergassed mug. Buy Now — $32.95 See more merch