a mun is the main admin behind a role-playing account on social media. there can be multiple admins to one rp (roleplay) account but the mun is the *main* admin.
if a person is role-playing kageyama from haikyuu, you would call the main admin of the account “kagemun” or “kageyama-mun”
by k3r0pp1c0r3 January 19, 2021
Get the munmug. 
by ak330 January 16, 2010
Get the Munsmug. THE COOLEST THING IN THE WORLD!!!! or: A fast paced game where people talk formally about political fakeness, kind of a mix between the weakest link and risk.
MUN President: If you have a motion to propose to the model, please lift your plackard now.
Board of Delegates lift their plackards.
President: Delegation of Russia
Russian Delegate talks about it while he has fun
Board of Delegates lift their plackards.
President: Delegation of Russia
Russian Delegate talks about it while he has fun
by Thepartylighter October 31, 2009
Get the MUNmug. 1*Derived from the word "money" or meaning great or excellent or cool. Can be used in place of something that is cool.
2*Also used in reference to ganja or the use of it.
2*Also used in reference to ganja or the use of it.
"Dang ganch that c0rk 900 was mun."
or
"Hey do you think i could bum a mun(cig)?"
or
"Eh, wanna roll some mun?"
or
"Hey do you think i could bum a mun(cig)?"
or
"Eh, wanna roll some mun?"
by Eric Ellestad May 25, 2006
Get the munmug. 