13% is term referring population of African-Americans in United States.

It's used when blacks commit crime on Internet
"Despite being only 13% of population they commit 50% of all crime"
by Haage September 6, 2019
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finally considered a teenager and knows all the perverted jokes of the world
woah congrats duude your finally 13
by final13 March 18, 2009
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A number commonly known for superstitious beliefs about it being unlucky. Originally it was a holy number, but somewhere along the way it was hijacked and portrayed as unlucky. Fear of this number is called triskaidekaphobia.
by IkeM October 11, 2003
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13s (13er in German language) are all people, who were born at a date, when the amount of milliseconds of the current system time had 13 digits. That includes people that were born after September 2001 (until 2286, just in case).
Other than the cool 12s, the average 13s is not very cool and shows a remarkably immature behaviour on the internet. 13s like embarrassing themselves on TikTok or similar platform, they like Fortnite dancing in public and are overall just cringe in chats.
"Ew, another 13s joined the server. I feel bad for the person talking to him."

"You are so 13s! I do not want to hang out with you anymore."
by schneeeee May 24, 2021
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Thirteen stands for M, the thirteenth letter of the alphabet. M is for Mexican Mafia. Any real Mexican gang that lives in S. California starding from Bakersfield and down all the way to San Diego should be affiliated with 13.
Mexican Gangster: Hey homie you bang!
Some fake gangster: No I dont please dont kill me!
by ASESSINO April 12, 2004
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The most annoying age for any teenager, when s/he is stuck in the awkward first year of being an adolescent.
When Sally turned 13, she felt like she was a different person.
by LizabethDae July 10, 2006
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used by sur13...or the surenos a gang originaly frum southern california...in spanish the thirteenth letter iz "m" and in gangland it standz for "mexican mafia" .thirteen iz used in many latino gangs...ms13..s13...m13..ect.comonly worn on gang clothing or jerseys ect..writen old english style.
that muthafucka iz frum cali..he wuz in Sur 13.
by latin assassin klick 187 July 10, 2003
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