Old Bitter Bitch Share definition Flag A woman that is negative about everything. Usually have low selfesteem. That's one OBB! Old Bitter Bitch!! She always have something negative to say. Old Bitter Bitch by Prettynotpetty10 November 17, 2015 0 0 Get merch Get the Old Bitter Bitch mug. Buy Now — $32.95 See more merch