A fraternity or frat was a type of social group often found at institutes of higher education on Earth. The word had its root in the ancient Earth language Latin, and meant "brotherhood." Some frats had a bad reputation for hazing new members.
While talking with Zhaan about how Aeryn Sun and Ka D'Argo were treating him, John Crichton said that it was like he was "in some never-ending frat hazing at Alien U." When Zhaan asked, "Frat... hazing?", Crichton said that he'd rent her a copy of Animal House on the next planet they stopped at. ("Exodus From Genesis")
- The reference to fraternities was not in the original television release, but was only in the extended version of the episode found on home video.