quackenfart Share definition Flag When someone with the name Quackenbush cuts one loose. Quite arguably the most horriffic of odors. Holy shit! What did you just quackenfart? I wouldn't come in here. Grace just quackenfarted. quackenfart by melq December 17, 2008 0 0 Get merch Get the quackenfart mug. Buy Now — $32.95 See more merch