it means talking bullshit in persian (farsi). and is mostly used by the younger teen generation in iran, and is equivalent to a "shut uppp" in english.
goodarz: "bro i swear hannaneh is telling some kos-o-sher to her bestie haniyeh!"
mohsen: "don't worry about it bro she'll come to her senses.
mohsen: "don't worry about it bro she'll come to her senses.
by Ariashahanshah April 7, 2022
Get the Kos-o-shermug. ???: are you hungry meme man?
meme man: yes, i require sustenance to function any longer.
???: why not get a tasty l e m o n?
meme man: yes, a l e m o n sounds like it would hit the spot.
meme man: yes, i require sustenance to function any longer.
???: why not get a tasty l e m o n?
meme man: yes, a l e m o n sounds like it would hit the spot.
by jeffdiamondchin November 19, 2020
Get the l e m o nmug. by mayanaze June 2, 2018
Get the Omug. 
A deeply intense orgasm that causes the entire body to spasm and clench for an extended period of time. Often take minutes to recover from. Can feel like a minor death. Usually comes from a period of orgasm denial or long building orgasm.
My partner had teased me for days, bring me to the edge and then forcing me away from it. When I finally got off, it felt like a Screenshot O.
by Kinkysunflower October 9, 2023
Get the Screenshot Omug. 
