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Mar13, meaning March 13, is a shortened visual pun used for #Mar13Day, a dedicated holiday for a popular character from the hit 2014 video game on the WiiU, Splatoon.
A: Dude its Mar13 day!
B: Fuck off Callie is best girl
Mar13 by BetaBlastr March 15, 2020
Related Words
A gay man who loves to swallow c0ck
Ew, your man101?
Man101 by Landonisanidiot December 16, 2021

Penis man10

The most legendary hacker/ gamer that ever lived he took on every competive fighting game player at once and didn't even break a sweat that man is awesome
OMG LOOK AT Penis man10 GO HE HIS WINNING
Penis man10 by Sans car April 15, 2020
The *MAC-10* is a fully automatic pistol, like a handheld machine gun an this sucker fires 1500 Rounds Per Minute(Rpm) An takes only 1.3 seconds To finish one clip.
*Man Looks At Dead Body*

Man:Damn....So Many Bullet Holes....Must'a Been A Mac10.
mac10 by KoolFace December 15, 2008
Marco is the difinition of a massive shlong
you have a massive marc00
Marc00 by Penutbutteronmyballs January 19, 2022
Smarter then you, irc junkie, plays too much counter-strike, obviously owns you.
Oh sh1t mari0 is c0m1n9 h1d3 1n ph33r
mari0 by MaRi0 December 3, 2004
More from Urban Dictionary
anyone who succeeds in disgracing/over indulging themselves in the throws of clubland
28 hours and 4 clubs later, gurning for england but still refusing to go home - a total wrongun!!
wrongun by bevvers March 21, 2007
Word of the Day on October 8, 2026

square grouper

Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."
square grouper by slipsheet November 6, 2004
Word of the Day on October 7, 2026
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026
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