Although this is a joke, I imagine this can well be true sometimes. Made me laugh.
At one point during a school football match, the sports master called one of his 7-year-old 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," he continued, "I'm sure you know, when a penalty is called, you shouldn't argue, swear at and attack the referee, or call him rude names. Do you understand all that?" Again the little boy nodded.
He continued, "And when I call you off the pitch so that another boy gets a chance to play, it's not good sportsmanship to call your sports master a stupid a--hole', is it?"
Again the little boy nodded.
"Good," said the sports master. "Now go over there and explain all that to your mother."