bkcs Share definition Flag Abbreviation for Burger king car slut. A woman who will go down on you for a whooper, anything for a whooper with cheese. Invented in 2010. "Hey Murph checkout that bkcs" bkcs by william1989 September 5, 2011 0 0 Get merch Get the bkcs mug. Buy Now — $32.95 See more merch