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An adult who thinks they can do anything to get their child to be grounded. i.e. Blaming oneself for being late a second even though the child had nothing to do with it.
"Jeez Peri. You're saying that your parents abused you just for dropping a pencil? What an A Dult.
A Dult by Henry Peri September 22, 2017

Concerned Adult Brigade 

Often called "CAB" for short, the concerned adult brigade is any group of equally disgruntled people (usually 35 or older) united together for an absurd and often unnecessary cause. These are the people who run neighborhood watches, regularly attend PTA meetings, deem things "inappropriate", complain to authority figures, overreact on issues, chaperone parties, file noise complaints, call parents, actually check movie and game ratings, work at the FCC, and generally meddle in the affairs of the youth.

Members of the concerned adult brigade come in many forms though are recognizable by their running-for-senator hairstyles and "sensible" shoes. Almost always women.
Girl #1: "So I watched sesame street yesterday for no reason. I thought you said Katy Perry was gonna be on it!?"

Girl #2: "Ugh, she was! But the Concerned Adult Brigade saw her outfit and started bitching. So they pulled the episode off the air."

Accidental Adult 

An individual whose age indicates maturity but whose approach to life suggests otherwise.
Whenever my neighbor waters his shrubs, he wags the garden hose between his legs and waves to traffic. Total accidental adult.

I try not to laugh when children call me “Mr.” They have no idea I’m an accidental adult.

adult theater 

A theater that only plays pornographic movies(Gay or Straight). Seating varies but usually has at least one area(couch,platform, etc) for sex acts to be performed for the entertainment and/or participation by the theater patrons.
I went to the Adult Theater Friday night and there was a Woman there whos Husband was letting anyone have sex with Her. She couldn't get enough.
adult theater by Shades_1970 August 12, 2015

Adult friendship 

Friends with benefits, especially for those past 40.
"I have an adult friendship with David Duchovny" - Gillian Anderson
Adult friendship by GennnX April 26, 2016

adulterer 

a man who cheats on his wife.
a man of low morals or character.
man of little integrity.
He cheated on his wife. Pond scum.
adulterer by lob February 24, 2005
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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