Ty,
Big 'Seinfeld' show fan (addict?) here.
Originally the screen name was 'compos mentis' aka 'sound mind', based on this scene with Larry David and his hilarious (IMHO) over the top portrayal of George Steinbrenner (see 1:15-1:50 min mark on vid if interested).
Then it went to 'cosmos mentis'...just to see who was paying attention.