fiddlesticks Share definition Flag a word that means jack shit even though it's supposed to be something you say when you mess up. IT'S NOT A SAYING! you dumbass, fiddlesticks isn't a word, you deserve two kicks in the ass fiddlesticks by iamthezebra August 15, 2010 0 0 Get merch Get the fiddlesticks mug. Buy Now — $32.95 See more merch