29
A word women use to describe male behavoir which they cannot comprehend.
Ugly Becky: "OMG! Darrel cheated on me! I don't get it!"
Plain Jane: "Just forget about him Becky, he's just immature."
by ThEmperor November 18, 2008
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30
Used by a person who can not have fun.
"Gosh Sepand you are so immature"
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31
The adjective boring people use to describe fun people.
JK: "Nip slip!"
Maren: "You're so immature"
JK: "You're so boring"
Maren: "I know"
by jmfk November 18, 2014
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32
Someone who maybe be irresponsible unorganized and does little kid things but all in all is a fun person!
A: MUD FIGHT!!
B: Your so immature.
by ieezsooperawzumninja February 14, 2010
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33
A group of people who say the word "eww" too much.
"Eww, why are we so immature eww"
Selena
Destiny
Rachel
+ Friends
by <3cum<3 January 07, 2008
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34
1. The term used by girls ranging from 8th-10th grade to describe guys in their grade as an excuse for becoming sluts to college guys in a higher grade.

2. Used to describe adolescent people who don't drink alcahol, take recreational drugs, drink coffee, sneak out of their house at 1 am, have sex etc...

1.
Kate: The guys in my grade are so immature, which is why I am going out with this new guy.

James: Do I know him, what's his name?

Kate: I don't know but he is 21, has a car and and can buy me and my friends beer

2. Brandon doesn't drink, therefore he is extremely immature
by Jason_Cali28 December 08, 2006
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35
Ashley and Katie are being immature by having fun .
by ImmatureGurl August 12, 2012
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