M.O.P., short for Mash-Out Posse, is an American hardcore rap group. The duo, comprised of Billy Danzenie and Lil' Fame, are known for their loudly aggressive delivery. Although they maintain a strong underground following, they had some minor mainstream success in the early 2000s with the songs "Ante Up" and "Cold As Ice". The group has frequently collaborated with DJ Premier.
As childhood friends, Bill Danze and Lil' Fame grew up together in a rough section of Brooklyn known as Brownsville and were members of a neighborhood gang named Mash Out Posse headed by Fame's older brother, Big Mal. With a desire to express themselves through rap, they formed a group named after their gang. Originally, Fame was the DJ of the group. With encouragement from Big Mal, Fame began to write his own rhymes.