Dirk Nowitzki Is The Teutonic Tambourine Man

His season over, last night Dirk was in Grand Prairie, Texas, to catch indie-folk band the Avett Brothers. Naturally, he was invited on stage to join in on "I Killed Sally's Lover." Dirk was handed a tambourine, and proceeded to rock right the fuck out. (Fun starts at the two-minute mark. [ Cosby Sweaters]