Adam wrote"I wasn't talking to you" is the oldest, and weakest, defense in the coaching book.
Weak indeed. A good response is, "Coach I know who you were talking to." Not antagonistic, sarcastic, or disrespectful, but it doesn't let him slide nor invite further discussion.
Or, for my fellow English speakers, "Coach, I know to whom you were talking." 😉
Now, if I just had a good response to the new coach fave around here: "C'mon, maven, you're better than that!" My most recent response to that one is, "Thanks, coach!"