Joakim Noah is now a member of the New York Knicks, which means a bigger spotlight and more media and fan attention than he was accustomed to in Chicago during the first eight seasons of his career. But with the Knicks in Boston for a final pre-season matchup with the Celtics, Noah discovered what might be his greatest challenge yet—child hecklers.

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Noah, who’s always had a distinctive, non-traditional shooting motion, whether lofting free throws or attempting 15-foot jumpers, found his adversary at TD Garden: a young boy wearing a Larry Bird jersey sitting a few rows behind the Knicks bench. The boy began mimicking Noah’s shooting motion, which can look like he’s throwing a chest pass, and he did it so many times that Noah finally took notice. That didn’t hurt the kid’s confidence, though, as he kept going, even as Noah began throwing some smack back his way.

Look for this kid to follow Noah from city to city, haunting him in every arena he plays in for the rest of his life.