1 definition by Zack Schmitt

Acronym for junior partier. It is used to describe someone who is not down for a party or fun time. Someone who will not partake in fun events, drink more beer, etc.
"Hey James, you want to see who will have a longer keg stand?"-Mike
"Naw dude"-James
"Dude, don't be such a jp."-Mike
"Fine, let's do it"-James
by Zack Schmitt May 15, 2008
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