Dallas Mavericks forward Dirk Nowitzki impressed just about everyone with his Game 4 performance, scoring the game-deciding basket and 21 points and 11 rebounds to even the series, 2-2.

Among those apparently left unimpressed? Miami Heat stars LeBron James and Dwyane Wade.

In a video shot by CBS Dallas, Wade and James are shown heading for the team bus after shootaround, laughing and covering their mouths with their shirts, as if to protect themselves from being sick.

Wade turns to James and says, "Did y'all hear me cough? Do you think I'm sick?"