1) When one gets high, you tend to go on an adventure (or mission) to do go somewhere, usually in search of munchies. Mish is a short form of mission, and usually refers to this type of situation.

2) Another use of the word mish is to describe something that is far away.
1) "Yo man, lets go on a mish to get food!"

2) "Nah man, we aren't going to go all the way there...that is such a mish!"
by SandKouf March 16, 2008
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When you are absolutely destroying your opponent at a game (usually pokemon) or you are destroying them irl. Commonly used by elite pokemon players.
I'm mishing you so fucking hard it is 6-1.
by week4hoh April 8, 2019
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A term that is used to describe a task that is considered difficult. Shortening of the word 'mission'.
-Where have you been?
-I had to visit my nan, it was the biggest mish.
by Shmutsy October 10, 2005
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