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
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