Bastardjuice Share definition Flag Any drink that is found to be unsatisfactory. Used typically in the Midlands of the United Kingdom "This drink's awful, what the fuck is this? Bastardjuice?" Bastardjuice by John Delonge April 25, 2006 0 0 Get merch Get the Bastardjuice mug. Buy Now — $32.95 See more merch