What is "m.o."

abbr. modus operandi

M.O. is the seventh studio album by American hip hop recording artist Nelly. The album was released on September 30, 2013, by Republic Records, as the follow up to his sixth album, 5.0 (2010). The album is preceded by the release of its lead single, " Hey Porsche", released on February 19, 2013, and reached number forty-two on the US Billboard Hot 100. " Get Like Me", featuring Nicki Minaj and Pharrell, premiered online on June 18, 2013, and was officially released on July 2, 2013, as the album's second single. The album features guest appearances from Nicki Minaj, Pharrell, Future, T.I., Daley, 2 Chainz, Trey Songz, Fabolous, Wiz Khalifa, Florida Georgia Line, Nelly Furtado and Yo Gotti.