butt fuck circle Share definition Flag A circle of men engaging in anal sex. Everyone gives and everyone receives. Also known as a BFC. Hey, do you guys wanna circle up and form a BFC? Sure, It's been a while since I've been a part of a butt fuck circle. butt fuck circle by TF Botkin October 19, 2010 0 0 Get merch Get the butt fuck circle mug. Buy Now — $32.95 See more merch