What is "i.m.p"

I.M.P (an abbreviation of Ill Mannered Posse) was a gangsta rap group from San Francisco, California, originally made up of C-Fresh, Cougnut, Dre Dog later known as Andre Nickatina, Lou-E-Lou and Rob V. Their most known album is the underground classic Ill Mannered Playas, released in 1996 on In-A-Minute Records.