Alcohol is no doubt the root cause of all such problems. But then it is also an attracting factor for many airlines to get business especially for the outbound airlines from Doha. I am told that the first thing many passengers demand as soon as the plane crosses Qatar airspace, is wine. Many passengers are really thirsty after being here for so many months without a drink. The dress of the air hostess was not the cause. She was modestly dressed. In this case it appears the passenger had a drink one too many.