What is muff cabbage mean?

"Muff Cabbage" is a fictional term coined in an episode of the television show "South Park." In the episode, the character Eric Cartman uses the term to insult a girl he dislikes, referring to her as "muff cabbage" to imply that she has a smelly vagina. The term has since been used online as a slang insult, particularly in reference to women. It is considered vulgar and demeaning.