1. A huge, gaping maw of a vagina with not only inner and outer labia, but several folds of skin in between said labial regions, resembling a cabbage; quite possibly smells like old rancid cabbage as well.
2. Non-sensical term coined by South Park's episode called "It's a Jersey thing". Mostly uttered in anger.
Angry hair dresser: That whore is gah-bage! That muff cabbage thinks she's hot shit, but she's just nothing, she's just a cabbage!!
Innocent bystander: What the fuck is muff cabbage?!
Angry hair dresser: (shrugs) It's a Jersey thing.