[crazy voyager]

It depends really, I am not certain I would T this acctually, it depends
If he turnded to his team-mate and said it I wouldn't bother, if he said it so loud the entire gym heard I would T him though...
And I would use the whistle, mostly so that everybody realises what just happened
Had the guy said it quitely I would do like rngrck, talk to the coach and let him know that isn't ok and to tell his players they would get a T if we heard it again
But then again, it depends on how you say it...