In Kendrick Lamar's song, H.O.C. stands for “High Off Contact”. In this song, he is talking about his experiences as a non-smoker but since he’s in the studio where pretty much everybody smokes, he gets "high off contact" from the secondhand smoke.
Lamar is a hip-hop artist from Compton, California, signed with Dr. Dre's label, Aftermath. Kendrick's major label debut album, 'good kid m.A.A.d city' is already known as a classic, it was released in late 2012. His music has influenced other artists such as Snoop Dogg, 2 pac and Lil Wayne.
In music buzz, Kendrick Lamar blasts other rappers when his guest verse on Big Sean's "Control (HOF)" debuted on Funkmaster Flex's New York City radio show. Lamar crowns himself as "King of New York". Check out more at USA Today.