No duh

//noʊ ˈdə// intj, slang

Definitions

Intj
  1. 1
    An expression or exclamation that something is exceedingly obvious or apparent, or that one would have to be extremely foolish not to realize something immediately. US, colloquial, sarcastic

    "It says here not to drive with the sun shade covering the windshield of your car. No duh!"

Etymology

US from 1962.

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