Its not a big deal at all. It is going to happen get over it. They will hear is somewhere else, and chances are the kid is using the same language with friends. It is an emotional game and easy to get caught up in it. Wether or not some believe it it allways got me fired up, it really does get your attention. It is a part of it and probably allways has been. Thats why sports are not for all kids or 'parents'. If the kid decides to play he will have to learn to be tough skinned and deal with it.