What in the fucking hell!

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What (in) the fucking hell?

rude slang An exclamation used to emphasize extreme surprise, shock, anger, disgust, etc. What in the fucking hell do you think you're doing? You can't come in here! Just what in the fucking hell is going on here? You spent all that money at a casino? What the fucking hell, Jake?
See also: fucking, what
Farlex Dictionary of Idioms.

What (in) the fucking hell!

exclam. an angry and surprised elaboration of What? (Taboo. Usually objectionable.) What the fucking hell do you think you are doing?
See also: fucking, what
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • OMFG
  • ah
  • RTFI
  • RTFM
  • gee whiz