BFWAV Share definition Flag Someone who is your bestfriend and has a vagina. Some dude: "Who is that girl?"Ashley: "Ummm..thats my bfwav duh!"Liz: "Yeah were bfwav's dooder." BFWAV by thatonechick74O January 22, 2011 0 0 Get merch Get the BFWAV mug. Buy Now — $32.95 See more merch