You're taking the subway home from work. A young woman is sitting across from you. You can't tear your eyes away from her. You glance at her surreptitiously—her face, her torso, her legs, her feet. She crosses her legs, and your gaze follows the movement. Something about her fascinates you; somehow, you have the feeling she can see right through you.

She opens her purse, takes out a notebook, and writes something, then tears out a page. When she gets off at the next station, she hands you the folded note, then gets off without turning around again...