Bobaraba
It literally means big butt in many West African languages such as Bambara (Bamanankan), Jula (Dioula), Maninka (Malinke). There is a popular song by Ivorian singers DJ Eloh & DJ Mix called "Bobaraba" celebrating the voluptuous round behinds of African women.
Person 1: "Fatoumata has such a bobaraba"
Person 2: "Yea I know, it's so big !"
Person 2: "Yea I know, it's so big !"