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1 definition by ongbayz

 
1.
A word used to describe someone who lacks common sense and has poor social manners. They like to gloat about themselves and their achievements, even if that means demoralizing others.
Bob: "dayyumm, this girl's the epitome of ugly. HAHA... the compete opposite of me"

Mary: "wow, this guy is the biggest jockstrap"

Joe: "what a JS"
by ongbayz December 20, 2012