Someone who:
1: constantly makes penis or fart jokes
2: praises their name on urbandictionary.com by saying it means "huge penis" or "awesome person"
3:makes fart noises with their mouth and/or arm
4: calls everything and everyone they don't like gay
(pretends to masturbate) HAHAHAHA

Urban dictionary definition-joe: an incredibly awesome person with a large penis and gets all the ladies.

(fart sound) LOLOLOL

Look at that gay car. Its so gay!

Bill is so gay because he thinks PS3 is better than XBOX!

Jeff can't go 2 minutes without making a penis joke. He's so immature.
by alby1 June 19, 2010
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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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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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an unwillingness to recognize, like those around you, that your head is up your rear end, and you like it there.
by deviant May 8, 2003
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the act of being immature
Your actions are full of immatureness
by ron January 18, 2005
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