I found this written in my notebook. I have no idea when I wrote it. I have no recollection of the incident, but I assume it really happened.

On the tube. Gorgeous guy opposite testing his pen by writing on ugly girlfriend's hand. Writes at length, intensely. Eventually shows her what he has been writing. He's been filling in an job application form. She looks at it, makes as if to throw it away. He looks hurt. He tears it up. My pen runs out. We look at each other suspiciously. He hands me his pen.