At one point during a game, the coach called one of his 7-year-old hockey players aside and asked "Do you understand what cooperation is? What a team is?" The little boy nodded in the affirmative.
"Do you understand that what matters is not whether we win or lose, but how we play together as a team?" The little boy nodded yes.
"So" the coach continued "I'm sure you know, when a penalty is called, you shouldn't argue, curse, attack the referee, or call him a pecker-head".
Do you understand all that?" Again, the little boy nodded.
He continued "And when I call you off the ice so that another boy gets a chance to play, it's not good sportsmanship to call your coach 'a dumb a-hole', is it?" Again, the little boy nodded.
"Good" said the coach. "Now go over there and explain all that to your mother".