On the original vinyl of PRIVATE PARTS & PIECES II: BACK TO THE PAVILION, Side 1 is called "N.O.R. Side" and Side 2 is called "S.O.R. Side". I recently came across something (in an interview that I can't find now) that said this was some kind of joke on the phrase "A.O.R." but didn't explain it further.
Actually... I had always assumed it meant "North of Record" and "South of Record"!