B.I.K.Y. Share definition Flag Acronym meaning Bitch I'll Kill You. Wife: Honey, I have been fucking your husband and brother.Husband: Well, you know when i get home B.I.K.Y. B.I.K.Y. by Jujucrock February 4, 2010 0 0 Get merch Get the B.I.K.Y. mug. Buy Now — $32.95 See more merch