There's an old saying "it's not whether you win or lose, but how you play the game".  I truly believe that.  There's nothing worse than a bad winner or a sore loser.  And the punk in this video is among the worst losers ever.

At a Russian ping-pong tournament, he was defeated by his opponent fair-and-square.  But he didn't take the loss very well.  Watch what he does afterwards.  What's even more amazing is that the audience barely seems to react.

Let's just say if it were my kid, his sports-playing days would be over forever and he'd be grounded for life!