Abbreviation of "Join In". A spoken adaption of the culture of 'text language.' Used either as a noun to refer to someone who is an unwelcome member of the party but impossible to shake off, or as a verb describing the action of joining in with a group of people for lack of any better occupation.

Related to tag along.
Noun: "Who invited Katie? She's such a J. I."

Verb: "Hey my bus will be delayed by at least an hour so can I J. I. with you guys?"
by drum'nabass September 9, 2007
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J I C is an abbreviation for the words Just in case, used in the chatrooms
Joey: where were you
Jill: In the grocery store i got some tomatoes J I C
by tony October 27, 2004
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Alyssa is the one person who you would never forget. She is one of the nicest people in the world and will do anything to make sure the one she cares about are safe. If you need to cry, she is the one you go to. If you need to laugh, she is the one you go to. If you need to be hugged and cared for, she is the one you go to. Alyssa is beautiful inside out. She has plenty of guys chasing her but if she doesn't like many of them. So if Alyssa likes you make sure you never let her go or mess up because you will always regret it. She is truly amazing.
Alyssa J I is the greatest girl in the world.
by Lagitiscool October 4, 2018
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A JRI (Jager relater incident) is very similar to an ARI (Alcohol related incident) except that it may, and usually does, include incidents you can't recall until reminded in some way. The consumption of jager seems to have direct effect on the time-space continuum. These incidents can include bruises from an unknown source, texts you don't remember sending or phone calls you don't remember making, as well as things you may have said. In extreme cases it may involve inappropriate behavior with the opposite sex - and in the most extreme case, this same behavior with the same sex. Can occur after several shots of jager but seem to have a higher incident level after multiple jagerbombs.
Angel: Who was that girl you were making out with on the dance floor last night??

Glenn: I was making out with a girl last night?? Must have been a J R I because I remember nothing!! Hope she was cute at least!! Damn jagerbombs!!

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Angel: Soooo - can you please tell me what I texted you at 3am last night? I see responses from you but it seems I cleared my sent folder!

Blake: You called me a bum for staying home and then said you were coming to my house to party. I told you "negative" and you argued but then finally agreed. No big deal - we'll just call it another J R I!!
by Just Sayin12 January 25, 2010
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"Their i/j was so stupid."
by whagwan October 23, 2009
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(ahy-vuhn; Russ. ee-vahn) (kel-ee),

1982 - Present, Landscape Architect, American Icon, and fashion trend setter; U.S. citizen; most notably credited with the invention of the popped-collar which to date has been responsible for nearly 7% of the entire GDP of the United States between the years of 2001 - 2005. Despite the undisputed economic gains which resulted from the initial jolt in sales of Polo shirts, respected economists both home and abroad are now tributing the economic collapse of 2008 to I.J. Kelley based on fundamental evidence indicating many homeowners began defaulting on their mortgages in order to divert personal income toward excessive numbers of "pop-able" collared shirts; Academy award for role in Waterworld 1993.
Oh man am I glad I followed in the footsteps of I. J. Kelley and started popping my collar, otherwise my neck would be getting uber sunburned right now!
by J. Fehr. November 11, 2010
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Inside Joke and you're on the Outside. Used on someone looking for an explanation of an inside joke. Usually leads to further confusion, as it is often use as an inside joke of its own.
Guy: Jane sure is bootylicious.
Guy 2: That thing is like a watermelon!
Girl: What are you guys talking about?
Guy: I J and you're on the O.
by StegDizzleG July 29, 2011
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