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dirty Siemers 

When a person with Siemers as their last name shits in a german shepherd’s mouth then cums on a girls left asscheek while the girl is holding a german flag
Guy: Hi! Do you want to perform a dirty Siemers with me?
Girl: Yes, i would love that!
Dog: Woof!
dirty Siemers by JJ Sie September 25, 2021

Caden Sieber 

(adjective) when your so unathletic that anything that you touch with your bare hands will end up on the floor. When one is described using this phrase, they should rethink their life choices and get back to the weight room.
Dude, how did you drop that catch? Your such a Caden Sieber!
Caden Sieber by Lil Diabetus November 9, 2021
A small, hairy penis, usually a chode.
Woah he has a Siebert, Fail.
Siebert by Doctajsnap April 25, 2010
(v.) synonym for exaculate; to release sperm
"I'M SIEBERTING!", he screamed trying to pull out.
Siebert by Anonymous2414 November 5, 2014
crazy girl that likes to skinny dip
my siemers
siemers by heck-no September 24, 2011
An awesome guy, The most epic baseball player ever
*BAT CRACKS*

Woah Thatś a SIEBERT
Siebert by The Bas3ball Guy October 3, 2019
More from Urban Dictionary

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
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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