>>530733957
the word "smart" has literally referred to pain longer than it's meant intelligence in english, and its use to refer to intelligence is BECAUSE of the association that being quick-witted means you're better at inflicting verbal barbs. Half the words we use to describe somebody as eloquent or intelligent are directly derived from the ability to inflict pain the same way.
>Sharp tongue
>Cutting remarks
>Biting comments
etc.
Saying someone has a smart mouth has the same origin and etymology, they literally have a mouth that can wound with words and we associate the ability to wound with words with intelligence......but the chicken and egg situation is literally Smeortan/Smart-->Pain--->Intelligence, not the other way around.

"Smartypants" has a more negative connotation than something like "Genius" because the former is about somebody who's smart in a way that's good at hurting people