She sat there, intent on arranging the bags of prescriptions she must have just bought at the Duane Reade on the corner. (There's a Duane Reade on every corner, in the city)
Once she seems pleased enough that the thinner bag was second, she began reading.
You see, nowadays, drug stores attached this long description about the medication they just gave you, complete with feel-good warnings like "If vomitting occurs, see your physician" and "If stool is bloody, discontinue use immediately."
So, she's reading the description, which runs two sheets of pages when she looks out of the corner of her eye.
The guy next to her is reading her presciptions, too.
Maybe they were birth control pills, maybe it was amoxicillan for the flu.
But she turned her head, glancing at the guy, and gave him her best, nastiest look, then went back to reading.
I'm sure the guy saw it, because he stopped reading. But they definately did not lock eyes, or actually look at eachother.
So, after a moment, he went back to reading her prescriptions, too.
Ever notice most people avoid any kind of eye contact on the subway?