Boston Celtics guard Marcus Smart leapt up high in the air to reject Brooklyn Nets third-year center Jarrett Allen on Tuesday in the two teams’ Tuesday night matchup. Smart, 25, then gave Allen the classic Dikembe Mutombo finger wag (via Taylor Snow). MARCUS SMART MUTOMBO'D JARRETT ALLEN 💀@smart_MS3 pic.twitter.com/DmsKayiPiF — Taylor Snow (@taylorcsnow) March 4, […]