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			I wouldn't laugh or say something sarcastic towards the coach.  If could be constured as a form of taunting or baiting.  Officials should conduct themselves with honor and dignity. Most likely, I would say this coach is in for part one of the 3 W's.  
Having said that, there is nothing wrong with a mutual laugh with a coach.
		 
		
		
		
		
		
		
		
		
	
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