A wide range of attractive, beautiful women that usually has unlikeable characteristic such as mental or emotional issues and bad habits and that she might end up putting her friends or partner in an uncomfortable predicament. She is therefore treated as a person who nobody wants to take seriously.
Mike: I saw Diane sniffing all that junk herself last night in a friend's party when I accidentaly barged on the toilet.
Bryan: I used to have a crush on that girl back in high school. She was so hot with those pom-poms.
Mike: Still is, man. What a hot mess she's become though.