Unlike Lil Wayne in his brand-new "How To Love" video, the restless and inventive young L.A. rapper Kendrick Lamar doesn't attempt to cram a Lifetime movie's worth of plot points into his clip for "A.D.H.D." He doesn't try to find room for any plot at all. Instead, the video, from director Va$htie, finds Lamar and friends cruising through a bodega ...