birth control bitch Share definition Flag When a girl becomes a major bitch after starting birth control pills. She was not necessarily a bitch before. Guy: Dude, my girl starting taking the pill and become a total birth control bitch! birth control bitch by AshAnne2412 March 1, 2010 0 0 Get merch Get the birth control bitch mug. Buy Now — $32.95 See more merch