I'd say the same thing. It's a bizarre tactic, to say the least. When I hear that, I think about calling the requested violation AGAINST the team doing the count out loud, just to make a point, but I don't actually do that in a game.
How do I tell a coach to knock it off, while using normal professional language? Saying "knock it off", "shut up", or similar expressions would be rude, so I need an alternative way to convey the same message politely, but firmly.
If a team counts when the other team has the ball, trying to cause a violation, I would warn, and then give a technical foul. If coach or a player keeps asking for a call, he'll get a call, just not the one that he expects
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