I’ve been pretty sure for a while that George A. Kennedy was one of my heroes, primarily for his amazingly anal-retentive and enlightening translations of Aristotle and commentary thereupon. Now I’m totally sure. Because in Book 3 of The Rhetoric, Aristotle says this:

In poetry it is appropriate to speak of “white milk,” but in speech such things are not only rather unsuitable, but if used immoderately they convict [the writer of artificality] and make it clear that this is “poetry.” (227)

Colloquial in the United States today, but Aristotle did not know about chocolate milk.