Term used to describe all the teenagers, "frat boy types", posers, thugs, and other assorted obnoxious entities who post all the inane, stupid, sexually graphic definitions for actual and made-up words on Urban Dictionary.
Most of you immature little fucktards will never attend college or achieve anything worthwhile in life, on account of your ability to reason and communicate like 12 year olds.
by Anonymous Hater of Stupidity August 17, 2007
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1. So many teenagers in this day and age who take the time to write immature definitions about s*xual related content, draw men's private parts everywhere they go, think of an inappropriate comment or get an inappropriate meaning from harmless statements by more mature people.

This adjective also describes most teenage boys in general, but I do know a few boys who do not make s*xual innuendos every other sentence.

2. People who think everything they can't do, they don't like, or disapprove of is 'gay'.

3. 'men' who think that women live to serve them.
Mature person 1: hey dude! Want to go---
Immature person 2: get some? Haha alright dude let's go!
Mature person 1: I was gonna say go get some coffee...

Immature person: dude, golf is so gay!

Mature person: just bc u can't do it doesn't mean it's gay.
by Ilovemydoggie23 December 21, 2011
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Something that makes life a lot more fun.

Though being completely immature will probably have adverse effects on your social life, education, and life in general it'll be more fun!
1. Zoe: Look John, I'm sorry, I'm breaking up with you.

John: Yeah? Well...you've got herpes!

Zoe: This is why I'm breaking up with you! You're so god damned immature!

John: At least I don't smell bad!

Zoe: Whatever!

John: GAAAAY!!!!

2. Bob: I'm sorry Karl...your...well...your dog died.

Karl: Oh...well...YOU LIKE MEN!!! MAAAN LOVVEEERR

Bob: Wow. Your immaturity was so bad I might have to jump out of a window.
by Metalhead For Life November 11, 2006
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Always seems to be referring to men because they did something stupid-(not smart) having nothing to do with maturity. It is manly use by women referring to there husbands.
"You are so damn immature."
or "He is the most immature person I've ever met."
by American Redneck October 25, 2005
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what people call you when your a teenager and your doing something fun for little kids. Usally people say this to make themselves feel older and more mature even though there not.
Sam: Dude wanna go have a mud fight!
Kevin: Your so immature, thats for little kids.
Sam: Fuck you at least I'm not an asshole.
by a-manster August 4, 2006
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In a generic age-irrelevant view of the concept: someone who wouldn't or can't get himself to do what they know is the right thing to do.
Someone who likes someone else but wouldn't act upon it; simply cause they are too immature to do what normal people would do.
by s-bandt November 6, 2011
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A young person, usualy a 8-14 year old male that knows 100+ words that mean penis and lives his life just to have them all published in an on line dictionary of slang.
Oh my! You knew that another word for penis is pennyprick! How immature of you to try publish it.
by Tenarr June 22, 2005
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