When you read of all the issues that arise, you have to wonder about the lack of people skills!
I was yelled at by a Flight Attendant (on a flight across the US) when I stood up to retrieve a book from the overhead locker.
Unbeknown to me, one of the pilots had left the flight deck to use the bathroom.
Apparently I was supposed to remain alert for this situation, and also know I wasn't allowed to move a muscle whilst this toilet break took place!
I guess I should be thankful I wasn't put in a headlock and arrested.