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Originally from 尊い (toutoi), meaning precious, valuable or priceless, it became Japanese internet slang "ていてい (or てぇてぇ)" roughly meaning someone else's actions are wholesome, or precious.

Popularised in the west by subtitled V-Tuber clips, where it was used typically during moments where the V-Tubers were acting affectionate to one another; this hard to translate word was often simply romanised. This resulted in several spellings, the most popular of which seems to be "TeeTee", whith other variant such as: tee-tee, tee tee, tei-tei, TT and te-te.
Check out this clip of OkaKoro being TeeTee.
TeeTee by _whistler June 7, 2021
Related Words
Teegen • teege • TeeGee • Teegeeack • teeger • Teegan • teener • Teagen • teepee • tedge
japanese vtuber slang for "precious" or "wholesome" or something along those lines, there is no proper direct english translation.
that moment between watame and haachama was so teetee
teetee by madokatan March 18, 2020

teenerweener 

a person with an excuse for a cock.
I was with him last night, he has a teenerweener.

yo what up teenerweener.
teenerweener by yungvlonekillah March 18, 2020
A majestic feline, often with a floofy tail and a mane.
I’d like to introduce you to my teekers, Deebo. Don’t pet him for too long or he will bite you.
teekers by Fleabo February 3, 2023

Filthy Teeter 

A very dirty vagina. It smells terrible and keeps many guys away unless if they want diseases.... lots of diseases.... crabs.... aids.... ganaria.... super aids
I can't believe Joe slept with her she had a Filthy Teeter he should definitely get checked at the free clinic.
Filthy Teeter by x8MikeHunt69x April 13, 2009
Not to be confused with "Teageun," Taegeun was an early 21st century surrealist spoken word poet. He was known (and widely respected among artists and gamers everywhere) for uttering early 21st century gamer parlance up into the late 2010's. (After which such terminology was widely replaced with twitch chat speak.)

Examples include terms such as: "Gg" & "ez" where the phrase would be re-uttered two to three times.
"Man did you see Teageun popping off on mercy last night?"

"Nah man, Teageun is a mercy one trick. I was watching Taegeun, he's better. He verbally abuses one tricks in Overwatch match chat."

"Oh true. Gg ez"
Taegeun by DigitalNik January 24, 2019
More from Urban Dictionary
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
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