“100% Juice” is a mixtape by American rapper Juicy J which was released on September 9th DatPiff. The tape offers 16 tracks of hard-edged street rap, with most of the beats coming from Atlanta production crew 808 Mafia. 　　The first promotional single “Mrs. Mary Mack” includes the collaboration of Lil Wayne and August Alsina. The official music video was exclusively premiered on WORLDSTARHIPHOP the same day of the mixtape’s release.