One who irritates others for their own amusement. This is usually met with hostility.

Also, a term of endearment between friends.
"What an utter arse munch!"

or
"Awright arse munch? How's it going?"
by 4Tone-E May 28, 2015
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someone who is a disliked fool
"that man just flicked his cigarette into that school yard..what an arse munch!"
by mashcamo February 28, 2010
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