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sexstitute 

Is a legalized prostitute
We are not a prostitute but a sexstitute
sexstitute by Godie November 4, 2023

substitute person 

A person that is only desired or wanted at their significant other's conveinience.
From a quote by "Claire" in the film Elizabethtown

The significant other of the substitute person may not "have enough time" or "be too busy" for a relationship, or they may only be interested for the purpose of sex, money, status, or general need of someone to talk to during times of stress. The substitute person generally won't get the emotional fulfillment from the experience that he/she may crave, and will feel unimportant yet somehow will continue on out of hope.

This can only end in tears for the substitute person.

Substitute teacher 

Someone who does not know anything about teaching, yet still gets payed while the students don't learn anything that day
We had a substitute teacher today so we didn't do shit

I reject your reality and substitute my own. 

A quote from the low-budget sci-fi/fantasy film The Dungeonmaster, popularized by Adam Savage of Mythbusters, this quote basically means "you may be technically right, but you're not changing my mind." This can come off as stubborn, but it really doesn't matter, since you don't care about the technical "facts".
Person 1: Ugh this character's design is so terrible and pointless.
Person 2: Well actually, did you know that it's design comes from goes on to prove person 1 wrong
Person 1: I reject your reality and substitute my own.
Person 2: -sigh- Okay then, moving on...

I reject your reality and substitute my own. 

Breaking the rules: like being able to kill the bad guy even though you already died.
Sword Art Online Abridged Parody: Episode 11

Kirito: I reject your reality and substitute my own.
Kayaba: "NICE!! Dungeonmaster!"
Kirito: "What? No! Mythbusters... What the hell is Dungeonmaster?"
Kayaba: "Oh. I was so happy there for a second."

coffee substitute 

Any replacement for coffee. Energy drinks are commonly used as a coffee substitute. Tea can be a coffee substitute for some people, as well as caffeine tablets.
Person #1: "Do you still drink coffee?"

Person #2: "Come to think of it, not as much. I am using energy drinks much more often as a coffee substitute."
coffee substitute by yes juanito yes February 14, 2012
More from Urban Dictionary

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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