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it can mean really or very; It is used in the MD and DC area
I'm ji hungry man.
I'm ji sleepy.
by Ni-Ni May 19, 2006
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J.I. stands for "Join Inner" and refers to a person who "joins in" on other people's conversations uninvited; adds his or her unsolicited advice or opinion to a conversation of which he/she is no part of, etc.

People who J.I. usually have no friends, otherwise they'd have conversations/discussions of their own with friends of their own.

This word was started at Auckland Grammar School in Auckland, by the 2003 class of 3G. Or so they say. The word "J.I." has reached other schools in the Auckland region (and most likely) other parts of NZ.
"Fuck off, you J.I.!!! God."
by Courtney April 07, 2005
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J.I is an abbreviation term; Join In,its another word for blender. J.I is like trying to hard to fit in to the crew..but really you dont..New Zealanders use in soufcyde mangere 275..
sole; bro look at that dude what a J.I`s cunt.
uso; i know aye bro, BLENDA
by shush` April 13, 2005
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1. To try to act cool
2. To be a penguin
3. Can be used in the same context as the word 'fuck' or 'damn' or 'shit'.
4. In fact, it can mean anything in a bad context. If you have nothing to say, just say 'Ji'.
Your mom's a Ji.
Fucking Ji.
He's so Ji.
Ji man.
by Premguin March 29, 2005
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A J.I. Is someone who Joins In on arguments and conversations.
Graham: “stop doing that!”
Jamie “ yeah stop doing that!”
Graham “stop being a J.I. Jamie you twat!”.
by Graham Sissons June 07, 2018
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