RTFI

RTFI

rude slang An initialism of "read the fucking instructions," an exclamation of frustration and exasperation directed at someone who has asked a question or series of questions that have already been answered in the instructions for something. Would you stop asking such boneheaded questions and just RTFI? I don't have time to hold your hand on every project we do. I don't understand how you could be having so many problems installing the software. RTFI, dude.
Farlex Dictionary of Idioms.

Read the fucking instructions!

and RTFI
exclam. & comp. abb. Simply read the instructions. (Usually objectionable.) RTFI! It’s really very simple.
See also: fucking, read

RTFI

verb
See Read the fucking instructions!
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • FGI
  • DYOFDW
  • HBU
  • CTFO
  • WTG
  • DBEYR
  • YKWIM
  • DYOR
  • AINEC
  • FTFY