A 12 year old is simply a person who is 12. Maturity has nothing to do with it. I'm 12, and I cannot even begin to describe the hate I receive every day for something I can't control. Ridiculing someone for being 12 is like insulting someone for their sexuality - you're degrading them for something they can't control.
I am not an immature little asshole.
So, if you hate on 12 year olds just to make your pathetic little life seem slightly plausible, then kindly pull your head out of your ass before it gets stuck.
Person 1: OMFG 12 year olds are so stupid! I hope they all rot in hell.
Person 2: I hope you jump off a cliff.
by pinnocking November 23, 2014
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Some (and i repeat, SOME) are people who repeatedly say they will fuck your mom on Xbox voice chats, but others are actually pretty decent people. They sometimes act like a teenager, since they’re a year away from 13, which either means being mature and responsible, or being immature and insulting everybody they see in online chat rooms.
This person who keeps annoying me acts like a 12 year old, but at the same time I have some pretty decent 12 year old friends.
by just a fellow girl gamer January 11, 2020
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The main point of insult on the Internet. Due to the stereotypical immaturity of a 12-year-old, most trolls and idiots on the internet are commonly attacked and named 12 year olds. Most people judge someone's 12-ness on the amount of 'ZOMG's in a sentence, their amusement at an overused meme or a bad word. They are also supposedly supposed to enjoy joining in with the 'grown-up' stuff such as rickrolling, chatroulette, omegle, and vandalising wikipedia, as well as more serious things such as boasting their feigned use of cannabis or 'weed' as most call it. Fortunately, this stereotype is not always correct, as some 12-year-olds are actually relatively intelligent. But that's another story...specifically for the nerd, boff, boffin, dork and geek definitions.
Troll/Idiot: LOL THIS IS GAI ZOMG ZOMG
Uninformed individual: Freakin' 12 year olds.
by I Define The Internet June 9, 2010
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Oneofthethreegreatestheroesofourgeneration: Diggity Monkeez is obviously twelve years old.

Diggity Monkeez: Well, that doesn't make me a bad person.
by Diggity Monkeez January 20, 2005
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A 12 year old is simply a person who is 12 years of age. The stereotypical 12 year old is an immature kid who acts like they are older than they are. While this applies to some kids it DEFINITELY does not apply to all. I know 12 year olds who are kind and caring and smart and funny and all things good. But I also know kids who swear 1000000 times in each sentence and use “gay” as an insult which is pretty rude. But most kids do not fit into these categories and are in between. These kids are more common than the perfect or horrible kids that people say all 12 year olds are. 12 year olds are just people in an awkward stage of their life. No need to be rude or place stereotypes. 😊
A possible conversation (I have witnessed)
What some 12 year olds say:

Person 1: yo dude are you 12? I bet you are just some idiot. Or are you one of those sick-up nerds? Either way you suck
Person 2: Yes I am 12. The fact you think I am an idiot makes you gay.
Person 2: hey I am 12 and I am just myself. No need to be rude about it.
by Black_Rose13 July 10, 2021
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A meme from a drag queen named Jasmine Masters. When describing something you haven’t done or had for a while you use this phrase. It can also be used when someone keeps doing something.
“You’ve been singing that same song for the past...12 years!!”
by SekcB March 25, 2020
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When a 12 year old on a online game cursing and making sexual jokes while claiming that s/he is a "pro" at the game
That 12 old: Ha bitch I just fucked you mom an your face all in one hand!

You: ugh that 12 year old is the worst!!!
by mark_aye_359 February 27, 2016
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