Butt Bone Girl Share definition Flag when you feel your girl's bone bone with the head of your penis. YO I fucked Stephanie so hard last night! She's a real Butt Bone Girl! Butt Bone Girl by YoSupBro25 February 28, 2019 0 0 Get merch Get the Butt Bone Girl mug. Buy Now — $32.95 See more merch