An obese female's circle of female friends who are all obese. The size of this group of friends will vary depending how many fat girls there are at your school.
Due to her size, Morgan had no time making friends due to the existence of the Fat Girl Club.
The Hot Girls Club is a secret organization of all the hot girls you know. It is unknown how deep the club goes, but chances are if you know a hot girl they are involved with other hot girls and they are intertwined with knowledge of other guys, gossip, and current events.
"Ralph, Jessica is so cute! I saw her hanging out with Andrea at the watchtower the other day."
"Of course she's hanging out with Andrea. They're both hot, they're part of the hot girls club."