Mob Mentality is a split 7" and album by Dropkick Murphys and The Business. Originally, the bands put out a split 7" single in December 1999 with the name Mob Mentality. This single consisted of three songs, two which were each band covering one of the other band's songs, and the third was an original song performed by both bands together. A year later, they released a full-length album with the three previous tracks and nine more. Of the twelve tracks, each band does four covers (two of which were covers of the other band's songs) and one reworking of a song they originally recorded. The other two tracks are two versions of "Mob Mentality", an original song performed by both bands together, credited to McBusiness.