The United Whores of America. They are a very elite class of promiscuous girls/guys and are a secret organization. You can only be invited by the leaders and only for doing some act of extreme whore-ness. They also have a code name that is rarely used, hug-slut. Which is quite ironic, considering they do way more than just hug.
Carson is such an uwa member, he gets with Hannah, one of the leaders, all the time, and tends to enjoy hooking up with girls he just met at parties.