To lack foresight. To be duped into something. To unwittingly enter into an agreement which, to the average human, will result in an obvious negative consequence.
Shopper: ‘How much for this apple?’
Shopkeeper: ‘Well, normally it’s 25p however, today we are offering it at a discounted rate of 24p, if you also purchase this shiney poo sandwich for £2.49’
Shopper ponders: ‘Sounds like a bargain…I'll have 2 please’
Shopper gets Munned.
Shopkeeper: ‘Well, normally it’s 25p however, today we are offering it at a discounted rate of 24p, if you also purchase this shiney poo sandwich for £2.49’
Shopper ponders: ‘Sounds like a bargain…I'll have 2 please’
Shopper gets Munned.
by The Urban Fox Hunter September 25, 2009

by GauTruc August 21, 2010

refers to girl's vagina. (hilonggo)
by peach blossom June 29, 2011

Derived from the word "mundane", a mun is the author writing for a character in an online RPG. Can also be used as a suffix to denote a reference to a character's player rather than the character. Synonymous with certain connotations of roleplayer, author, player.
"That mun may be an idiot, but I can't fault his playing style."
"Do you think Wren-mun's coming tonight? I want to finish this RP with her."
"Do you think Wren-mun's coming tonight? I want to finish this RP with her."
by Riku December 24, 2003

If the person in role-playing online, and their screenname is Ayisha369, then, when speaking out of character, she would be referred to as Ayisha-mun.
by Ninkubator December 28, 2005

by The Moai April 19, 2005
