It's a reasonably common concept: https://en.m.wikipedia.org/wiki/Global_North_and_Global_Sout...

You were downvoted for not googling "the global south" before asking. It means you think that the time of others is less valuable than your own.

As the other commenter linked, it generally refers to "developing"/underdeveloped countries. Aka, countries with lower per capita GDP.

global north = anglo/scandi nations and the honorary westerners (israel, japan, s-korea, singapore)

global south is everyone else.

(Note that it's the StackOverflow users voting on questions - the same ones that you are soliciting answers from. Mods have actual moderation tasks to deal with.)