Someone who wanks to YouTube videos.
Ex.
-Christian 12 year old: Hey, do you want to finish the castle on our Minecraft server?
-All regular 12 year olds in unison: No, I'm going to go watch some YouTube videos then go to bed.
Wank12 year old12 year old boyYouTubechristian12 year old girl
by Throbbing Llama March 21, 2018
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Internet meme that came about after some kid said it on a comment when Youtube.com was raided with porn. Usually said after something that adults talk about/kids wouldn't get. Not to be said in real life, like most other memes.
Anon A: I was wondering, do you guys prefer anal sex or vaginal sex?

Anon B: I'm 12 years old and what is this?

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Anon A: Do you think its worth it to have sex without a condom?

Anon B: I'm 12, what is this??
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Anon A: My girlfriend just blew me, shit was SO cash.

Anon B: inb4 I'm 12 and what is this

Anon C: I'm only twelve, what is this?!
by JD13 July 26, 2009
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An often young kid with a rusty voice that is usually hard to understand who makes letsplay videos of the game know as minecraft for his 3 subscribers. Can also be used as an insult for someone who gets easily pissed off or has an aforementioned "rusty voice"
Max: *Oi guys ya wanna play some minecraft HAhaA?*
Noah: you sound like a 12 year old minecraft youtuber.
by MagmaHotDesigns February 26, 2018
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12 year old boy butt,:n. the ass of a petite woman, lacking breeders hips.
Asian chics are hot!
Most of them have 12 year old boy butts!
by Immodest April 17, 2006
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Only the greatest of meme viewers. Decides, only using deductive reasoning, that the greatest of all memes, such as Harambe, "covfefe" and Hitler / Anti-Semitic memes, are to his / her liking. One only views these on true websites made for memes, or as they call it, "memesites". These so-called "memesites" include Instagram, Facebook and Snapchat.
"Hey boy, why are you trespassing on my property?" "I'm a 12-Year-Old Meme Connoisseur. You shan't talk to me in that manner" "I am very sorry sir, I did not know."
by Chickenwob December 21, 2017
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No it is not it is a pre-teen going to the teen stage
I’m not a kid no more bob so is a 12 year old a kid still no he isn’t
by Safri_real July 11, 2022
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This is for females:

When 11/12 year old females haven't started their period yet... BUT are so flippin' excited because their tits are finally hangin' out! Shoot yea!
Tania was looking at her body for signs of pubic hair or breasts in the shower and when she got out, she 'examined' her 'boobs' in the mirror. To Tania's great excitement, she saw honest to goodness 'baby' breast! With all the joy that had overcome her she ransacked her room looking for the training bra grandma sent her last christmas! She was so joyful because, she was the first girl in her grade to wear a training bra! Her secret crush Harvey was sure to notice tomorrow at school! She wanted to be the first to tell him her 'tits' were hard, after all, he told her when his balls dropped! 'Maybe we can go out to the woods again and examine each others bodies, just like we did last summer!', she thought to herself.

WOW! Tania had finally gotten her 11/12 - year old upgrade!
by DiamondGirl4567 April 17, 2009
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