Slight hijacking of the thread for bad behavior while traveling, but outside of a lounge.... I am in the aisle seat, obnoxious guy in the window seat with his wife in the seat behind him. He places a call to his attorney (during which the flight attendant tells him to shut down his phone, which of course he ignores). He proceeds to tell his attorney all about an idea he has that he thinks will solve all of his financial problems and, after explaining the idea in some detail, asks his attorney at what point in the development process he should patent it. His wife is hissing at him to stop talking about it in public. He looks around, sees I am the only person near him, and then announces to his wife that there's no need to worry because nobody (ie me) will be able to understand it. He then tells her not to worry because since he was discussing it with his attorney, it's "privileged". What a bozo. So I took notes on it.

He went on to leave all of his garbage on the seat between us: open soda can rolling around, chips, candy, etc, and kept getting up and kneeling on his seat, shoes and socks off, to berate his wife and accuse her of being the reason they had no money. A really unpleasant person.