Biscuits and stimulating conversation 

Commonly known from a Harry Potter fanfiction, Potter, this means doing the frick frack, or sex.

"I spent my Christmas having biscuits and stimulating conversation."

Biscuits and stimulating conversation by JaimiePotter December 28, 2019

Non-Mechanical Reproduction Simulation 

Sex in half-life 2. A Combine unit that has 100 sterilized credits gets a sex.

Overwatch: Reminder, 100 Sterilized credits qualifies for Non-Mechanical Reproduction Simulation.

Non-Mechanical Reproduction Simulation by CP-1788 April 28, 2021

Fecal-Particulate-Olfactory-Simulation 

Fecal Particulate Olfactory Simulation, or FPOS, is the process through which one is able to experience a fart.

I was on an escalator and was downwind of someone letting one rip.. it was the worst FPOS ever... I couldn't escape it.

Fecal-Particulate-Olfactory-Simulation by Yokes April 7, 2005

Simulingus 

Simultaneously performing the act of cunnilingus and analingus on the same person during a threesome.

I had a threesome with a couple the other day where they performed simulingus on me. It was the best orgasm I ever had in a while

Simulingus by Ktom45 June 21, 2022

simulation high 

when someone has reached an extremely level of high that causes them to feel like everything around them is a simulation

Hey man, want something to eat?

-ha ha ha i feel like my head is gonna fall off

......
-......
morse code.

ahhh, good old simulation high

- hey man wanna go get some food

simulation high by reese davies July 9, 2018

Simulation 

The theory or belief that reality is a simulation to a degree that it is indistinguishable from "true reality" and where the inhabitants of the simulation are unaware that they are living in a simulation.

"What if we are living in a simulation, what if none of this is real?"

"What is real? How do you define 'real'? If you're talking about what you can feel, what you can smell, what you can taste and see, then 'real' is simply electrical signals interpreted by your brain." - Morpheus

Simulation by Homeless Chicken September 2, 2017

simulationist

One whose religious beliefs center around the idea that "reality" is a giant computer simulation.

For "religion" on my social profile, I put down "simulationist".

simulationist by ElectroKinetica December 13, 2007