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That guy who is an awkward addition to any conversation, plan etc.
"Why was Joshua with us at dinner the other day?"
"I know right? He invited himself to our plans at the last moment."
"How awkward, especially after what he said to Kate last week! Such a pile on!"
Pile On by Penkash November 15, 2016
Pile On - "sexual definition" - to have more than 2 people join together on a bed, rug, or elsewhere for the purpose of engaging in group sex or group sexual intercourse.

Usually associated with group sex, swinging, swingers, the lifestyle and other free-thinkers.
Linda and Jim were fucking naked on the bed. Debbie got undressed and joined them. Then John walked in, got naked and asked if he could pile on. They all shagged and reshagged for hours. The swingers piled on each other all night.
Pile On by Juke Boxx Hero October 23, 2011
Usually found in a hardcore show, a pile-on is when everyone rushes from the pit to the front of the stage and jumps on the shoulders of the person in front of them. This is done mostly during a sing-along where the vocalist gives up the mic to the crowd, much like a gang vocal.
Dude that pile-on during Mutiny was fucking croosh!
A Sexual Position... In Which Multiple Bodies Insert Into Each Other... The More Participants The Higher The Pile
I Was So Far Down In The Pile It Hurt... My Ribs Started To Crush

OMFG Check The Size Of That Pile-On Its A Mofo!
Pile-On by Yayo June 25, 2004

steamer pile on 

It is when you and your co-workers decide to drop dueces into one bowl, and to never flush it all day long.
Hey, wanna piss off the janitor with a steamer pile on?
steamer pile on by Mark the Spark September 24, 2008

pile it on bitch 

Load up my burrito!
Put an extra amount
*chipotle worker putting condiments on burrito*
“Is that enough?”-worker
“No, Pile it on bitch!”-me
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
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