RTFB: /R-T-F-B/ [UNIX] imp. Acronym for `Read The Fucking Binary'.

:RTFB: /R-T-F-B/ [UNIX] imp. Acronym for `Read The Fucking
Binary'. Used when neither documentation nor source for the
problem at hand exists, and the only thing to do is use some
debugger or monitor and directly analyze the assembler or even
the machine code. "No source for the buggy port driver? Aaargh! I
*hate* proprietary operating systems. Time to RTFB."

Of the various RTF? forms, `RTFB' is the least pejorative against
anyone asking a question for which RTFB is the answer; the anger
here is directed at the absence of both source *and* adequate
documentation.
-- The AI Hackers Dictionary