brain fart

American  

[breyn fahrt] / ˈbreɪn ˌfɑrt /

noun

Slang:

1. a brief mental lapse, especially an instance of forgetfulness or confusion.

   I had a brief brain fart and introduced him by the wrong name.

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Etymology

Origin of brain fart

First recorded in 1985–90

Example Sentences

While the risks and horrors of dementia are serious, the occasional brain fart, particularly when we're sleep-deprived or stressed, shouldn't be something to get even more sleep-deprived and stressed about.

From Salon • Feb. 9, 2024

I screwed up the solo thanks to a huge brain fart.

From Los Angeles Times • May 23, 2023

The "cucumber" moment was a "brain fart" because it was one of her first appearances on live television and she was nervous, she added.

From BBC • Dec. 31, 2020

As for the "cucumber" moment, she says that she was simply nervous to be on live TV and had a "brain fart," which is a colloquial term for when a person forgets something basic.

From Fox News • Dec. 30, 2020

Maybe it was just a common everyday brain fart.

From "Popcorn" by Rob Harrell