going berzerk on drink or drugs or preferably both.derives from the phrase "mental monkey cunt"
gavin went absolutley fucking munko last night
by sean archer October 10, 2003
1 more definition
I've noticed other entries, but 'munko' means the equivalent of 'c#nt' (female genitalia) in Japanese. There are other variations of it such as 'omunko' and 'omeko'.
You have a nice Munko.. LOL.
by Doctrine_Chinko September 25, 2007