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1. A rebel with a cause, especially an anti-authoritarian cause

2. An activist with the Bureaucrash Foundation.
1. He's a real crasher when it comes to defacing parking meters.

2. Did you hear about what the Crashers did in Cancun?
crasher by Starchild September 18, 2003
Crasher- Another word to describe an attractive woman
“She’s a real crasher”
Crasher by Warnabrotha May 30, 2019
crasher crashes into crashing bots
crasher by crashRcdez February 19, 2022

crasher girl 

A crasher girl is someone who dress like a boy (opposite of femboy) often has low voices and masculine, often acts like a man. (Basically a tomboy if you put it in that way).
"Are you a crasher girl?"
"Yes I really love boy clothes!!!"
crasher girl by Tompara September 5, 2021

Airbnb crasher 

Term for the sociopathic practice of hanging out at a heavily trafficked tourist spot and eavesdropping someone’s Airbnb plan to hit it first.
That guy’s a straight-up Airbnb crasher, he does it every weekend.
Airbnb crasher by Dr Bunnygirl July 14, 2019

Wedding Crasher 

A wedding crasher is someone who attends a wedding uninvited. Unlike the 2005 film which takes its name from the term, the objective of a crasher may not be to “hook-up” and have sex with guests that were invited but to enjoy free food, cheap or free alcohol, or the party atmosphere. Wedding crashers usually don’t crash the actual wedding ceremony (bride and groom on the altar with a priest) because of the lack of social significance to them and to achieve the previously stated objectives of entertainment, so they’re usually found at the wedding dance, reception, and/or dinner.

The nature of wedding crashers means they may cause trouble at weddings. Since they usually don’t know the people getting married (or other people attending) there is no significance, concern, or respect for the wedding attendees. For example, a crasher may get belligerently drunk and cause a ruckus at a wedding with no remorse since the people there mean nothing to him or her. Wedding crashers are difficult to keep out since receptions and dances tend to be large and most don’t require an actual paper invitation for proof. A small wedding where only family members are invited maybe a situation where a crasher would be easily spotted.

In rural areas or smaller towns where an “everyone knows everyone” environment is prevalent because of small population, inadvertent wedding crashing may occur when people not invited to the wedding ceremony attend the reception or dance after because they have some sort of social tie with people at the wedding. An example would be the person knows the bride and groom, who due to the fact maybe a friend of them would have their presence permitted at the wedding despite being uninvited.

Wedding crashing may also occur with people who know people at the wedding but are not invited because of disputes with guests or even the bride and groom. An angry ex-boyfriend may crash a wedding as a form of vengeance, for example.
"Those two guys over there in the corner have done nothing but drank most of the wine at this wedding. They are rude to the guests, look at them grope every girl here! They are definitely Wedding Crashers.”
Wedding Crasher by Aftrbrnr August 28, 2007
More from Urban Dictionary
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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