fartbreath Share definition Flag the meaning is so obvious it doesn't need a definition - someone whose breath is so bad it smells like a fart! Doh! 'Hey fartbreath! Have you ever considered chewing garlic to improve the smell?' fartbreath by turkeyshoot November 1, 2006 0 0 Get merch Get the fartbreath mug. Buy Now — $32.95 See more merch