(Internet slang, sarcastic) North Korea; the Democratic People's Republic of Korea.

superlative form of good for you: most good for you

(Canada, US) Synonym of best before date

superlative form of well-informed: most well-informed

superlative form of well-timed: most well-timed

plural of best girl

(dated) One's girlfriend. / (film production) A woman who performs the duties of a best boy. / (fandom slang) A reader or viewer's preferred female character.

most of, majority of

superlative form of well-behaved: most well-behaved

plural of best bet