A mug that has been around for 13 years, what do you expect?
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by The trend follower November 26, 2017
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'13 Year Old Boys' aren't always just 13, the age it ranges from is about 12-16. It is infectious, therefor, be careful of who you surround yourself with.

Listen bands like Avenged Sevenfold, Slipknot, and Hollywood Undead
Most times, they drink Monster Energy Drinks, and save the cans.
They generally wear baggy pants, skull T-Shirts, and DC shoes.
They think they can BMX or skateboard, when usually they can't.
Whenever they go out, they travel with they're friends more than likely.
They often times like girls who wear T-Shirts with dinosaurs and dragons on them, wear lots of fake bracelets, and wear fake glasses.
Frequently, they like their mom better than their dad.
And last, but not least, when they take pictures of themselves, their hair is in the way of their face.
Did you see all those 13 Year Old Boys riding their bikes down the street with their Monster Energy Drinks.
by ItsYourMom July 05, 2011
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1. Unfunny and annoying hormone bags

2. Losers who come to urban dictionary to make a definition on how they're not like other 13 year olds.
by imakestuffdirtycuck April 29, 2021
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Another less funnier variation of the meme I'm 12 years old and what is this?

Said in forums that restricts the registration of people below 13. If you put the original version of the meme, which is: I'm 12 years old and what is this? Mods might think that you're ACTUALLY 12 years old and ban you because they're dumbass pricks, or just have a reason to ban you for the lulz.
Person 1: "I'm 12 years old and what is this?"

Dumbass Mod: "You're 12 years old? This forum is for ages 13 and up! *Bans Person 1*"

Another day:

Person 2: "I'm 12 years old and what is this?"

Dumbass Mod: O rly? I know that's a meme, but you piss me off and I have a reason to ban you. *Bans for the lulz*"

Yet another day:

Person 3: "I'm 13 years old and what is this?"

Dumbass mod: I thought the meme was "I'm 12 years old and what is this." What the fuck is going on?"
by UrbanWolf2215 July 23, 2010
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