A Brain fart (n.) is the blank that arrives right when someone is watching.
A Brain fart (n.) is a thought that left the room mid-sentence.
A Brain fart (n.) is not forgetting, it is knowing the thing and being unable to prove it in time.
A Brain fart (n.) arrives in the exact conversation where it will be counted.
Cluelessness (n.) is the most comfortable seat in a room where everyone else knows.
Cluelessness (n.) gets corrected once, after which people decide it is cheaper to work around.
Cluelessness (n.) is discussed by the whole room long before it is mentioned to the person.
Cluelessness (n.) is insurmountable since those who have no idea what they are doing genuinely have no idea that they don't know what they're doing.
Folly (n.) is the queen regent of the world
Folly (n.) is the product of all countries and ages
Folly (n.) is never long pleased with itself