“You think this rappin’ shit is easy, boy? It takes time,” shouts AD on “40’s,” the Compton rapper’s latest release. Parking his low-rider in a secluded lot in South Central, AD talks his shit in his latest video, warning potential assailants that he hasn’t gone soft just because he owns a little fame and money in the bank: “40 on my waist and Imma let ‘me know/Play the game that’s just how it go/Try to run up on me Imma let it blow/In these streets man, you never know.” Produced with verve by League of Starz’ Sorry Jaynari, “40’s” is a hard-hitting left coast banger that paints a picture of a rapper at the crossroads between street life and success. Premiered by EARMILK, “40’s” is a high spot from The Last of the ’80s, the second collaborative album from AD and Sorry January.