1. a very foolish or stupid person.

2. a species of donkey.
Jim is such a jack ass.
by reddy123 October 13, 2007
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A person who is so damn ignorant that the things they do cause you and your friends to laugh even though it causes them Pain.
Can you believe that Jim shot himself in the foot, What a JACK ASS
by Dilligaf1971 October 04, 2007
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Only a real Jack ass would interrupt a teenager at an award show and embarrass her like that.
by SmileyRay December 26, 2009
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Noun; Commonly a description of a person that is an acquaintance or someone you don't know very well but is truly a natural born asshole. Normally employed when speaking of someone who is more than deserving of being called a total f*#ing asshole but you won't dignify them by even using their name.
Did you hear the way that Doctor A. spoke to that nurse? Well yes, agreed she is lazy heifer, but he is just another Jack-Ass Jones!!
by FlyGirl November 13, 2013
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1 cup of absolut vodka,1 cup of jack daniels and a can of monster assult together in a pitcher.
by assrocket December 25, 2004
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