77 year-old lady I know flew from Bom to the US a couple of months ago. She was in the middle seat of one of those three-seat sets, in between two young men. When the flight took off, she felt cold, so she wrapped herself in the blanket the airline provided and dropped off to sleep.
She woke some hours later. She took off the blanket, left it on her middle seat and went to the toilet.
When she returned, her blanket was no longer on her seat. She thought perhaps it had slipped off onto the floor. No. Between the seats? No. Behind? No. Nowhere.
Then she noticed that the young man in the window seat to her right was now wrapped in a blanket, which he had not been before she got up from her seat. She asked him if he had taken her blanket by mistake. He muttered a hasty "No", turned away and closed his eyes.
She pulled her shawl from her handbag and wrapped herself in that. Before she fell asleep again, she noticed that the young man in the window seat to her right was actually wrapped in two blankets.