Mustard Farth Share definition Flag The useless mustard water that comes out of the mustard bottle before the good shit comes out. As useless as mustard farth on a limp pickle covered in tasteless christmas lights. Mustard Farth by Jazz Speller November 1, 2017 0 0 Get merch Get the Mustard Farth mug. Buy Now — $32.95 See more merch