the nick-name of a prolific 1970's serial-rapist, now used by other rapists to describe a woman with whom they are particularly interested in raping. The original Butter Face got his nick-name because he used butter as a lubricating agent when he was raping his victims. He was also celebrated for his good taste in women, which is why rapists now call their potential victims "butter faces." Many historians believe that the term "butter face," stems from the saying, "She looks good enough for Butter Face!"
Q:Is she worth it? A:Yeah, she's a definite butter face.