Skip to main content
A slidea (pronounced SL-idea) is an idea that a person just slides into, without really thinking about it.

It involves one or more of the many fallacies inherent in illogical thought.

Political and religious propaganda are the two most common methods of distribution for slideas.
Joe: I heard that after the new liberal administration is reworking taxes so that the richest people pay more and the poorest people get bigger breaks.

John: I read that after that, they are going to restructure society where we are all assigned jobs at random and have to stand in line for bread.

Jack: What gave you that slidea?

Mark: He got it from that angry conservative blog he's always reading!
slidea by dnalabkram March 5, 2009
Urban Dictionary Merch
Your favorite words on things you can wear, drink from, read, or give to a friend.
The Urban Dictionary Store sells gifts you’ll have to explain.

SideArmsing 

The act of masturbating until climax and then allowing the fluid to dry on its own because tissues get stuck on your penis.
Person 1: When you ejaculate, do you wipe it off?
Person 2: Of course dude.
Person 1: Have you ever tried SideArmsing?
SideArmsing by ShadowBeatzOff May 19, 2014

apex slide 

A world renowned glitch and slide located on the map Resistance. Many glitchers spend days trying to scale Resistance Roof to reach Apex. After scaling the rooftops and navigating the barriers, these glitchers go for the Apex Slide. This is arguably the best slide in all of Call of Duty and rivals slides found in water parks.

The slide itself is named after FaZe Apex, who was the first person to hit the now famous slide. It was the closer to his 100K Subscriber Montage.

Now there are popular series involving this biblical slide. One of these series, is Apex Time Trials, hosted by Scarn. To this date not one contestant has been able to beat his Guinness World Record time of 38.138 seconds.
I just hit the apex slide.
apex slide by AnonymousGlitcher November 10, 2014

Slide The Sausage 

What you say to someone,when you want to give it to them sexually.
“Damn,that girl is so hot.”...”I want to slide the sausage to her.”
Slide The Sausage by jimd8498 April 30, 2019

stripper slide

The act of a girl rubbing her labia against a man's penis
My girlfriend doesn't want to lose her virginity, so she gives me stripper slides every night.
stripper slide by $20atatime October 28, 2013

Koopa-Backdash-Wave-Slide-Hover-Walk-Moon-Landing 

In Super Smash Bros. Melee, characters who's walk-acceleration is lower than their traction value after wavelanding backwards can buffer a slight walk forwards to decrease the momentum lost. The walk input must be at its lowest value to perfectly execute the tech. (rough translation of inputs) Characters with low traction (Luigi) benefit worse than those with higher traction values in Melee. (i.e Gannondorf can benefit from the Koopa Backdash Wave Slide Hover Walk Moon Landing more than Luigi in terms of distance)
Youtube has more info on this.
The Koopa-Backdash-Wave-Slide-Hover-Walk-Moon-Landing can make virtually anyone feel like they are playing on ice.

owl slide 

dil howlter's roof in dan and phil's sims 4 series
look it's an owl slide! it's just like dil's house!
owl slide by idkwhatiam September 17, 2017
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
Literally "dirty" pronounced with a West Indian accent. Can also have a positive connotation, for example Sean Paul's album title "Dutty Rock".
"The girl is pretty but she corrupt and dutty!"

or, in a positive usage:

"Booya! That freestyle was dutty!"
Dutty by J Hall April 3, 2003
Word of the Day on October 1, 2026
korean word for madam, older woman
Ajumma wait a moment
Ajumma by aintnotinbutnice July 5, 2009
Word of the Day on September 30, 2026

Slop Grenade

When someone uses AI to generate a large document, slide deck, or piece of code/software and tosses it over the fence for you to deal with.
Chad: Hey Brent I sent you the new backend API change to review, it’s only 100 files changed.

Brent: he just tossed me a slop grenade
Slop Grenade by Joe Squid September 28, 2026
Word of the Day on September 29, 2026
Load more