Youtube user mikeyjur123 was going about his business, playing a match in NBA 2K12 as normal.
He makes a steal, and takes it down the court for a satisfying windmill dunk.
Don't feel too bad, I didn't notice what happened the first time either.
The AI on the bench apparently had just about enough of this game, simply getting up from his seat and walking across the court in the middle of the play.
He gave a polite wave goodbye, though, so how much should he really be criticized?
Warning about the rather liberal use of some unsavory language.