Mammy Cool J (AKA Great Grammy Mammy) is the great grandmother of Jerome Cool J. She's dead now, and the only remnant of her existence is a portrait of her, which Jerome has hung up on the wall of The Drunken Clam. Her picture only appeared in "The Woof of Wall Street", where Jerome first hung it up, only for it to be almost instantly destroyed by a wild bull, brought into the bar, by Peter, Quagmire, Cleveland, and Joe.
- Her name being "Mammy", is unfortunate, due to the fact that "Mammy" was used as an ethnic slur against black people, (women especially), during the time, she lived through.
- She is the second member of the Cool J family, to have a racial slur for their first name. The first is Jerome's mother, Jemima Cool J.
Community content is available under CC-BY-SA unless otherwise noted.