Marginalia
Dom, this is for you. I know how much you like Hemingway, and I know how much you hate people who write in library books:
Describing a group of men causes our friend to write "gay" in the margin.
Oh, Brett's a girl? Never would have guessed that from the fact that the next word is "She".
The best is: "I suppose you like to add them up." -> homo.
It's so much fun having a studious precursor point out the nuances of a writer's prose for you.