Skip to main content
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.

Prices in USD. Free US shipping. International shipping and regional book fees are shown before payment.

Seno Miyagi 

Seno is the Director of the Science Division of Second Earth. He is insistant towards the high council about keeping Marlene from being omitted so that she can remain as partners with Yuji on the battlefield.
Seno Miyagi discovers a link between the B-cells and the sleepers, and implements an experiment. Later he learns that there might be a deception by the High Council and organizes "The Ark," an underground organization to stop the experimentation of the B-Cells.

Seno Miyagi is a fucking badass. Definitely one of my favorite characters from Blue Gender.

Sweet balls Miyagi 

A fancy and exciting new way of saying "yeah sweet" or "great idea".

Other uses include a substitute for: "I agree", "Yes I will", "That sounds great", etc.

Allows the user to freestyle with their own mashups of the phrase, eg. "Sweet balls Miyagos" / "Sweet balls Miyaaag".

Often used in conjunction with the exclamation "WAX ON, WAX OFF MOTHERFUCKER!".

Always abbreviated in text form as "SBM".
1. Kid after taking his first shit: "I DID IT MA!"
Mum: "Sweet balls miyagi"

2. Kid after graduating college: "I MADE IT MA!"
Mum: "Sweet balls miyagi, WAX ON WAX OFF MOTHERFUCKER!"
Sweet balls Miyagi by Madmancloak September 27, 2011

Sketchy Miyagi 

Word from which things may be looking to go wrong and only just avoiding the situation - Australian slang discovered on the gold coast
" kid falling from a 100 foot drop and surviving" ahhh your doing a sketchy miyagi there son!
Sketchy Miyagi by Mr Miyagi May 26, 2004

Soggy Miyagi 

When a boy tea bags another boy or girl in the mouth and pokes his or her eye with his penis. Mr. Miyagi (Karate Kid) invented and is the master of this move.
The girl likes it when i give her the old soggy miyagi.
Soggy Miyagi by Mr.Miyagi November 14, 2006

Soggy Miyagi 

Soggy Miyagi- A fart so juicy, it makes your underwear soggy. A form of shart.
Man, I laughed so hard, I did a soggy Miyagi.
Soggy Miyagi by Zozo the Cat February 7, 2010

Soggy Miyagi 

When a male ejaculates on the abdomen of his partner and then smears the semen with his testicles, moving in a circular motion, alternating between clockwise and counterclockwise directions. The action should mirror that of Daniel-san in the 1984 hit movie, “The Karate Kid”.
Him: Your belly looks like it could use a buffing?
Her: Soggy Miyagi me, daddy-san!
Him: I’m gonna wax on, jack off all over
Soggy Miyagi by master-peeyagi September 25, 2021
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
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).
After we broke up, he was floxi to me.
floxi by Dr. Geek May 13, 2009
Word of the Day on September 28, 2026
Load more