In Ice-T’s 2012 tell-all, Ice: A Memoir of Gangster Life and Redemption, he went on record about the world’s second oldest profession. “Pimpin’ ain’t easy,” he wrote. “No, as a matter of fact, it’s very fucking complicated. It’s the type of game where you’ll end up pulling your hair out before you learn to do it correctly.” This thesis is proven conclusively in the new Ice-T-produced documentary, Iceberg Slim: Portrait of a Pimp, available on iTunes now and in theaters now. Iceberg Slim, for the uninitiated, is the world’s most famous former pimp, a guy who wrote one of the most influential “non-fiction” books about the game, the 1967 paperback Pimp: The Story of My Life — a copy of which ended up in the back pocket of a New Jersey kid named Tracy Marrow who’d grow up to write rap songs about cop killers and, well, pimps.