Top Definition
It's a term used when working in the field. When the job is getting tough you have to get back up, dust yourself off, fire up a joint and keep working.

i.e. Joint Up, Spark up a J, Smoke em if you've got em.
In example when Land Surveying: The Party Chief might say, "Let's all j up in the low ground and get this job finished!" or "It's time to J Up!"
by The Frost Pin March 30, 2005

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Jup
Jup. Net slang for yup.
A mix between yup and jeah
<PriNcess UnfiNite>im gonna give everyone a download limiter
<PriNcess UnfiNite> no more bitchin
<Brandt> good idea
<Brandt> i have 1 already
<PriNcess UnfiNite> jup
by UnfiNite February 03, 2005

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Join up, to participate in something.
Kyle - Hey man, I'm gonna play some Call of Duty. You gonna J up?
Mike - Yeah bro I'm down.
by dubstepmegusta August 20, 2011

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jup
Someone who thinks their hot shit, when they really are hot shit. But at the same time they're lame for being conceited. If you know a jup he's too scared to make a move.
Hey you know Luke?
Yea, but he's a jup.
by barbie22 May 24, 2011

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jup
A mongo freak, there is nothing else needed to be said.
well atleast jup rides straighter then his sexuality.
by jfran August 12, 2008

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