A keg waited expectantly in a corner.Eyeing the generous bowls of corn chips, I sat down beside a first-year named Brendan Jackson who, as it turned out, was a member of a mysterious sixth-floor Frat. ???It???s very unofficial???Ru-Rah-Rigma,??? he explained mysteriously. ???There???s a fraternity on the sixth floor???? asked a classmate. (It???s an all-male floor.) ???Yeah.