Kose nanat 

Means Fuck your mom

Kose nanat!

Kose nanat by Birm June 10, 2018

Kose Nanat 

Persian slang that simply means "Fuck your mom" and sometimes "Fuck you" .
Depends on the situation and the background :

This slang can be used in serious situations as a disrespectful slang , and in friendly situations to show love especially between boys .

For the serious situation and fighting :

- I'll fuck you up

+ Kose Nanat !

Friendly situations :

-Hahahaha you lost the bet

+Kose nanat ...

Or

-Bye , Say hi to your mom

+Kose nanat <3

Kose Nanat by Hippogryph Rider April 6, 2019

Kir Tu Kose Nanat

Persian offensive slang , means :

" Put my dick in ur mothers pussy " Or simply " Fuck ur mom "

Kir tu kose nanat ali

Kir Tu Kose Nanat by Hippogryph Rider April 7, 2019