To be in something or somewhere.
1. Anna was inside her house.
2. My dog, Rover, was inside his doghouse.
by Katrina ((Kitty)) September 17, 2005
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When the guy fucks a girl, about to have an orgasm, the girls says it preventing any kids
"Oh fuck! Oh yeah! Not inside! Not inside!"
by LifeDestroy1988 September 29, 2015
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A random joke that nobody gets...or between a couple of people.
Ex 1: What's down there? (insider)
Ex 2:How many licks? (insider)
by Smoothe00 December 09, 2009
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An emo suffix. Often refers to emotions, or the lack of emotions showing on the outside.
1. That makes me happy on the inside.
2. I'm bleeding on the inside.
by ritta mcfanfare December 19, 2008
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Simply put, an inside joke with yourself. If you have to many of these, it is no longer a joke, its a mental condition.
Me: I was just climbing the tree and...

Classmate: HAHAHAHA!!!!!!

Me: Uhhh, dude, I haven't even got to the marginally funny part. What's the big deal?

Classmate: Oh nothing, just thought of something.

Me: Care to share?

Classmate: No not really, just an inside inside joke.

Me: I'm just going to move on then. So i was climbing the tree...

Classmate:HAHAHAHAHA!!!!!!!

Me: Sigh.
by Ev003 October 09, 2011
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Any information that should NEVER be spoken about while the subject is within earshot.
Bob: Hey Tom, this is Nancy.
Tom: Is this the chick you hooked up at the work party.
Bob: DUDE!! Fuckin' INSIDER!!
by Winston October 23, 2003
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