"Butterfinger Bang Me". An expression used to indicate a moment of self loathing, usually followed up by ingesting one or more Butterfingers in an attempt to cause physical harm to one's body.
Big Bad Muff. Muff is slang for vagina (look it up) and some vagina's are hairy! A landing strip is tasteful, a bush that spans both legs and up to you belly button is not, its a Big Bad Muff.
If you can see hair poking out of her granny panties then get your weed wacker out, its a BBM. Or simply run away, you wont regret it!