Blue Chips is a monthly rap column that doubles as a scouting report. Each month, SPIN selects a new starting five, a group of rappers who could be Rookie of the Year candidates turned Hall-of-Famers or forgettable flashes in the pan. Only the passing seasons (and the number of streams) will tell. To read previous columns, click here. 30 Deep Grimeyy – “Say Cheese” [embedded content] Did you really listen to “Country Grammar?” Nelly hit the top of the charts while couching the promise of a drive-by in a children’s song. In the second verse, the St. Louis native slyly lets the world know that he and the Lunatics wouldn’t hesitate to shoot up the club. Two decades later, 30 Deep Grimeyy has no patience for sugarcoating the violence in St. Louis. In 2019, CBS declared the Missouri city the mo...