Denver airport.
In 1990 I fell asleep in the coffee shop of Denver airport Colorado USA. When I awoke the emptying shop at 6am was full at 7:30 am and a fiftyish woman in a lovely blue suit was sitting alongside me. I had bought a coffee (which was now cold, and two bags of choc chip cookies (one for now and one for the plane). The cookies were in between the two of us, half eaten. The woman reached over, opened the cookies, took one out, and began to eat it. I thought, "What unmitigated gall and nerve that she would do that!" In response, i reached in, got one, ate it myself, asserting my ownership of the said cookies. She just smiled then reached in and got another. Three times we went back and forth until there was one cookie left in the bottom, which I left for her. She got up and walked away. I had never seen a person as arrogant as that. Later on the plane I reached down into my carry on bag and found one and a half bags of cookies! I thought for a moment. Then "oh no! It was me ...