Top Definition
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 10, 2006

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Soft and offensive. Just like you.

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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 08, 2003

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt
The Decline of our civilization...
Kids acting 16 and 17 nowadays show immaturity by acting like 12 year olds..
by capule August 24, 2007

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt
A made-up word that conceited tweens like to throw around at people who aren't conceited tweens.
Boy: Hey. so.. did you score with that guy last night?
Girl: You're so immature!!!!1
Boy: Fucking cunt.
by someone or other February 14, 2005

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt
When a person older than you acts liek a little kid and post retarted definitions on a website that don't make any sense ad recive little acclaim and noone likes the joke's other than other immatures people like them selves
by Anonymous May 07, 2003

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt