Sayonara Bitches Share definition Flag Phrase used to announce that you are leaving the premises like a Boss and/or Badass Inferior Co-Worker: Are you leaving? Superior Self: Yeah, Sayonara Bitches Sayonara Bitches by THAT Guy June 15, 2012 0 0 Get merch Get the Sayonara Bitches mug. Buy Now — $32.95 See more merch