What one redneck says to another when he wants his chair back.
Hey, you done sat immature and I be wanting it back.
by Chase1204 April 14, 2008
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Doing whatever it takes to make you happy and for some people, at least they're being who they are and not the stereotype of who they're supposed to be. Your inner child. Most people believe that age defines who you are and if you don't "act your age", you're immature. "Mature" people seem to be very depressed and settle for everything even if they don't want it.
Stuck up bitch: Why is that girl coloring in a spongebob coloring book? She's so immature.

Other person: At least she's doing what makes her happy, bitch.
by hofosho23 December 1, 2010
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An overused term used by hypocrite teenagers (as in, 99%) to describe anyone or any opinion that they dislike.
Twilight fan #1: OMG that guy totally said Twilight is the boringest story EVER!!!

Twilight fan #2: OMG, he's so immature!!!
by lklkj98k November 2, 2009
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-People who insult everyone who has a different opinion than theirs, usually with a personal, racial, or gay slur.
-People who become alcoholics and/or do drugs just because “it’s cool.”
-People who tend to be impulsive; an example of which, is a tendency to use unwanted physical contact on another person, or making statements in complete ignorance.
-People who act like a bitch because someone doesn’t want to do something for them.
-People who only ever need you to use you.
-People who behave like hypocrites too often.
-People who constantly bitch about their life when they have it better than who they are bitching to, or for attention.
-People who talk shit because they’re insecure about themselves, then get upset when the person finds out.
-People who offensively use words that are not interchangeable because they are too ignorant to educate themselves.
Your little brother may be immature
by therealdeal,itsbacon October 10, 2011
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A word utilized to describe someone who exibits the behavioral patterns of a child. Such people tend to be impulsive; an example of which, is a tendency to use unwanted physical contact on another person, or making statements in complete ignorace and crudeness. Immature people also tend to make narrow associations of certain actions with certain effects, such as the association of biking with falling off.
by Anonymous October 21, 2003
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One who abuses drugs to feel grown up.
One who abuses alcohol to feel grown up.
One who calls people immature.
The majority of the teenage population.(immature)
by a-nonny-moosee October 15, 2008
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