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When someone tries to lie, but accidently tells the truth.
I tried to tell my best friend I hated My Chemical Romance, but did a slip-up and said how much I like there third album, The Black Parade.
Slip-up by pokeyofthelost January 16, 2022
Saying a word or sentence by accident .
Cashier: what can I get you
Jasmine: a blunt wrap "smiling" i mean a swisher "laughs"
Cashier: oh okay "suspicious and dont know what to say"
Jasmine: "open car door, & tell friend the whole story"

Friend: Girl u just slip up it's okay 🤣
Slip up by Destinygwood January 9, 2021
When, on overweight people, the inner hem on a pair of short shorts is pulled up by the fat between the thighs when walking, resulting in an aesthetically distasteful triangle-shape.
girl #1: Did you SEE slip up on that girl? those cute short shorts are totally wasted on her.

girl#2: She should wear capris or something.
slip up by sarahh=) October 13, 2007

slip up in something real fuckin tight 

sliding your dick up into a real tight bitch's pussy.

having your bitch slide down on your dick and its real fuckin tight.
"Yo Dan V. I just slipped up in something real fuckin tight last night son"
"Yo have you heard about Dan V. in Brazil? He slipped up in something real fuckin tight"

Sconnie Slip Up 

The term sconnie slip up can be used to denote unfortunate events that happened in either a state of confusion, the state of Wisconsin, or both.
I heard cousin Donnie had a sconnie slip up with Nancy; she asked for the cheese curd but he gave her the brat.
Sconnie Slip Up by gilman_god January 22, 2019

Saginaw Slip up 

1) This is the act of having sex with a girl (skank) and your junk slips out and slids in the ass. The only thing is you don't realize it and she has to tell you.

2) baning a chick and having you cock go into her ass, but her ass is so gapping that you don't even know you slipped up.
Karl: "I was going to town on her and all of a sudden the Saginaw Slip up!" "I stopped there."

Jimmy: "HUH, Saginaw what up?"

Karl: "Dude, she had to tell me my dick was in the wrong hole."

Jimmy: "Oh, the Saginaw Slip Up, I've done that to your mom."
Saginaw Slip up by cheese4green September 22, 2011
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
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