bitch it up Share definition Flag (v.) To scratch, ding, bend, scuff, or otherwise cause damage to a precious object. "Sure, I'll let you borrow my car. But I just had it waxed, so don't bitch it up." bitch it up by Magikid September 2, 2009 0 0 Get merch Get the bitch it up mug. Buy Now — $32.95 See more merch