If a highly regarded pitcher (or top ranked prospect) came into games and, instead of making a grunting noise, started screaming "FUCK" or "SHIT" as they threw the ball, what would the MLB do about it?

I have no idea why this thought came to my mind, but really I wonder what the response would be. Especially if you assume that he wasn't nearly as effective if only grunting as an alternative instead of screaming curse words and whatnot live