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2 definitions by Rob B

 
1.
a pejorative term, can be used to belittle or insult someone. Can also be used in place of many other unrelated words; he jassed up his knee pretty badly.
he really jassed that one up.
he pulled a jass.
by rob b September 20, 2004
 
2.
Phrase signifying the likeliness of the location of an object or action.
There is a nuclear wadte storage facility in your pants
by Rob B March 01, 2005