FM

( /F·M/, n.) 

   1. [common] Not `Frequency Modulation' but rather an abbreviation for
   `Fucking  Manual',  the  back-formation from {RTFM}. Used to refer to
   the  manual  itself  in  the {RTFM}. "Have you seen the Networking FM
   lately?"

   2.  Abbreviation  for  "Fucking  Magic",  used in the sense of {black
   magic}.

[glossary]
[Reference(s) to this entry by made by: {RTFM}]