Fortrash = F = forum

fortune cookie n.

[WAITS, via Unix; common] A random quote, item of trivia, joke, or maxim printed to the user's tty at login time or (less commonly) at logout time. Items from this lexicon have often been used as fortune cookies. See cookie file.

--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.