Comment by jzl

The emacs "JOKES" file contains an extended section of proposed backronyms, along with a bunch of other 20-30 year-old jokey bits from usenet:

https://github.com/emacs-mirror/emacs/blob/master/etc/JOKES

  EMACS may stand for "Editing MACroS," but some friends of mine suggested some more creative definitions.
  Here they are. Anyone have any additions?

  Eight Megabytes And Constantly Swapping
  Even a Master of Arts Comes Simpler
  ...