"From the Fucking Manual." Used to introduce a quote from a product's documentation in response to a question about that product posed in online forums, usenet, IRC, email, etc.
Using the term FTFM, like RTFM
(Read the Fucking Manual) from which is was derived, tells a person that they should have read the manual before asking. Unlike RTFM, however, FTFM is used when the person responding actually wants to provide a useful answer.
Question: "Is it possible to pass sudo a password from stdin instead of the command prompt?"
Answer: "Yes, it is. FTFM:
-S stdin, read the password from the standard input instead of the terminal."