When a person behaves both totally obnoxious and disgustingly obtuse at the same time.
That woman is completely obnoxious and intolerably obtuse. She is constantly boasts about all the expensive things she buys, luxury vacations she goes on, and all the money she can't possibly spend. She is oblivious to the needs and limits of other people and is completely obtusnoxious.
People who come into a bar for the sole reason that have nowhere else to go and are basically waiting to die. Ususally these people have no lives, jobs or friends and rely people who are not aware of what social leeches they are and accidentally engage them in conversation.
New guy just sat down next to that walking obituary who is actually knitting at the end of the bar and won't shut up about her 12 dead husbands and having to put her cat down.