'' Kosomk '' is an egyptian word .. which means your mom's pussy ..

A cultural and aesthetic mind-state that prioritizes making money, even as an “underground” or “radical” creator. The work isn’t made for money, but it’s the money that matters the most.

It is an offense insult.One can say it to those who make destructive errors either socially or professionally.

Also, it is popularly used among friends as funny expression while joking.

Also, it is used when one wants to warn the others from doing something wrong.