sofaternity 

A diverse group of females and males dedicated to enjoying television, radio, the Internet, or any other media or media companies, etc., from the comfort of their sofas. As with sororities or fraternities, their particular dedication is defined by the Greek letters relative to their interest (without using letters of established fraternities or sororities).

Sigma Pi Nu The sofaternity that enjoys watching "Supernatural". The show "Supernatural" often is abbreviated as "SPN", or Sigma Pi Nu.

Nu Iota Sigma The sofaternity that enjoys watching "NCIS" (there is not an exact translation of "C" in Greek". Also, "NCIS" used to be knows at NIS.

For "NCIS:LA" fans, the sofaternity offers NLA. None of the above show up in Internet searches as established Greek societies.

There are some letters that have been moved into the mix from the Phoenicians, generally used by mathematicians, such as Vega. Therefore, the sofaternity uses Tau Vega Sigma for fans of "The Vampire Diaries".

sofaternity by Morgana Le Fey August 22, 2011

scaternity 

A scaternity is a group of people associated or formally organized for a common purpose, interest, and pleasure in feces and fecal matter.

Bro 1: I gotta take a shit, dude.
Bro 2: Oh me too, bro.
Bro 1: It's like we're a scaternity!

scaternity by The Great Kraken September 3, 2010

sorternity 

Greek organization, often times in representation of both fraternities and sororities..generally used during times of extreme intoxication or hangover

Hey brah, are you going to the sorternity kegger tonight?

sorternity by BANGERS69 February 24, 2011

Sorternity 

Sorternity is when a house is both a fraternity and sorority. Men and women both living together in "harmony." Amen.

'I'd love to live in a Sorternity when I'm older! Makes me so excited, I become absolutely weak in the knees!'

Sorternity by Rengose December 19, 2014