Definition of brain fart in English:

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brain fart

noun

informal
A temporary mental lapse or failure to reason correctly: I’m having a brain fart and can’t spell his name correctly
More example sentences
  • I'm not sure what to write here - I'm having a brain fart.
  • Corey's brain fart is going to cost him quite some time.
  • Instead of being a mere brain fart, this became a fascinating cognitive dysfunction.
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