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Noosh Jar is a term meaning a jar full of vegetable oil. The term was created when someone mispronounced the acronym NOS meaning Nitrous Oxide System. Nitrous is made of vegetable oil, giving the term Noosh its definition. Jar was added onto the word Noosh later because of similarities to the term Douche Bag. Noosh Jar is generally used as a substitute of the insult Douche Bag.
"Ryan has always been a Noosh Jar"

"Why are you being such a Noosh Jar? Stop it!"
by 7894561233545 December 30, 2009
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