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Do yourself a mischief

A general warning to the recipient their past, present or future conduct may result in injury to themselves. Said injury could be caused by the recipient or by others.

Popular in Australia.
Prisoner 1: I'm really enjoying being the prison snitch.

Prisoner 2: A frieny piece of advice. Watch your step or you might just do yourself a mischief

mischief managed 

By using these words you can end any conversation, denote the finish of a project, or excuse yourself from any situation with authority. It's almost like... magic.
"I'll see you guys on Tuesday at 5:00. Mischief managed!"

"Finally the dishes are done! Mischief managed!"

"Professor Snape is coming, put away the Marauder's Map! Mischief managed!"

Ginger mischief 

Any action a red-headed person does.
Dang, did you see that man? He was doing some real ginger mischief back behind the building.
Ginger mischief by bbby egg May 13, 2011

Souls of Mischief 

One of the greatest rap groups of all time. Creators of such classics as 93 Til Infinity, Montezuma's Revenge, and There is Only Now. Also part of the Legendary Hieroglyphics along with Del, Casual, and Pep Love.
"Yo who would you say is the best hip hop group lyrically?"

"Gotta be Souls of Mischief, them dudes some monsters!"

"Yea nobody want it with the Souls"
Souls of Mischief by Salty Tips February 27, 2015

Mischief Managed 

Phrase used to 'close' the Marauders Map, making it blank and causing it to appear as a normal piece of parchment until the words "I solemnly swear I am up to no good" are spoken, which activate it. (Part of the Harry Potter book series)
"As Sirius Black noticed Snivellus Snape come around the corner, he cried 'Mischief Managed' and the Marauders Map became blank."

Mischief Night 

The night before wordHalloween/word where juveniles cause acts of mischief such as throwing eggs at houses, and covering landmarks with toilet paper.
Last mischief night, I TP’d my old school.
Mischief Night by adonkeyisaass October 27, 2003
More from Urban Dictionary

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

Pee Calculus

When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Pee Calculus by anorlondo October 1, 2026
Word of the Day on October 2, 2026
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