(1) adj. refers to the property of an object (or person) as broken, ruined, significantly damaged, disfigured or deformed, often to the extent that it is not reversable or repairable.
(2) adj. an extreme state of intoxication by way of drugs or alcohol such that the subject's ability to perform basic tasks such as walking and talking are significantly impared.

In New Zealand and Australian slang, 1 is the more common sense, and in UK slang 2 is more common.
(1) Fuck, that car just got totally munted.
(2) I got so munted last night, I don't remember how I got home.
by theflyingnerd December 6, 2007
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To have intoxicated yourself with alcohol and/or chemicals to such point where respectable levels of social and/or physical functioning become problematic; where you are also (quite possibly) chewing a lot.
In short, a state of complete and utter trashedness!
'Bert was so munted he couldn barely string a sentance together, and was chewing his face off like a gurning twat'
by anon May 22, 2004
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In New Zealand slang, 'munted' refers to something which is utterly destroyed.
From the New Zealand Herald:

Christchurch resident Jane Smith, who works in the central city, earlier told the Herald a work colleague had helped with rescue efforts after a building facade collapsed on a bus on Colombo St.

"There's people dead. He was pulling them out of a bus. Colombo St is completely munted," she said.
by Hugh___Jass February 22, 2011
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completely twatted of your face & gurning like a water buffalo.
fuck me, I was munted last night.
by fluffy February 27, 2003
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to put it simply, fucked. covers everything.
1. "this piece of shit stereo is really munted now."
2. "yeah, sorry bout that, i was well munted last night"
by __lux__ September 20, 2006
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I munted my drawing.
This picture is munted
by Abby January 21, 2005
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