Backate Share definition Flag To debate some one while backed out of your mind. Can be about many topics: God, life, sex, ect. Steve: "Dude, God doesn't exist"Connor:" "Lets hit this then i'll, Backate the shit out of you" Backate by CocoCheeze November 3, 2009 0 0 Get merch Get the Backate mug. Buy Now — $32.95 See more merch