Passenger's bizarre use of drinking glass on flight leaves travelers horrified
Leaving his fellow travelers mortified, an EVA Air business-class passenger was caught on video using a drinking glass to scratch his scalp mid-flight. An etiquette expert weighed in.

TL;DR
- An EVA Air business-class passenger was filmed using a drinking glass to scratch his scalp during a flight.
- The behavior was observed and filmed by a passenger seated behind him.
- The witness described the act as "disgusting" and expressed loss of appetite.
- Etiquette expert Diane Gottsman stated that using a glass for scalp scratching in public is inappropriate.
- The article also references other instances of passengers exhibiting poor public behavior on flights.