Reactor 

Reactor is someone who rather than initiate conversation will just react to things said to them, often using one of their set repertoir of one liners. This earns them respect from over hearing third parties and creates the illusion that they are contributing witty banter. This often leaves the initiator looking like the boring person with no way to respond. In reality they are riding the initiator's creativity and steeling the glory. They do not feel social awkwardness and are happy to sit there without engaging or starting conversation. The initiator is forced to keep throwing topics into the mix, each one battered down with one liners leaving the initiator exhausted, bemused and scraping the barrel for conversation while the reactor seems oblivious to their crimes. They have nothing to give and are the scum of society.

Kanye West (see him being a reactor on the Sunday Night Project)

Reactor by Adagoof July 15, 2009

Reactor 

A person who often responds or behaves in a particular way in response to something.

Johnny comments on everything I post on social media, he's such a reactor.

Reactor by Misheard Metal June 20, 2016

Reactor Overload 

The act of filling somebody mouth up during the devils tango

“Sally got a reactor overload within seconds of the devils tango.”

Reactor Overload by Moetueboi2022 July 18, 2023

reactor 4 

the thing in chernobly that went boom

Worker: Alright reactor 4 is a bit wonky, pre- OH MY FUCKI- fucking explodes
2
Person1: Dude i just did a reactor 4 on the toilet im dying
Person2: k

reactor 4 by 22222222SSA July 24, 2024

Reactor Core Game

Reactor core games in Roblox are almost always a game where you operate a ball powered by lasers that generates power. It can meltdown freezedown and stuff.

wanna play a Reactor Core Game?
sure! do we melt it or something?

Reactor Core Game by beikon999 March 12, 2026

Dark Matter Reactor 

A reactor that runs on dark matter, usually started up via power laser ignition to expand dark matter in the center of the reactor superstructure. Currently handled inside of Quantum Science Multipurpose Labs. Although, it is currently undergoing a switch of companies from Quantum Science to Pinewood Builders.

John: Hey Bill, have you seen the Dark Matter Reactor ignition sequence?
Bill: No... did you get a recording of it?
John: HELL YEAH!

Dark Matter Reactor by TechnoDiamond October 11, 2018

nuclear over-reactor 

A Person who over reacts to everything

I told Brian I can't go to the movies with him, now he thinks I'm pissed at him, he's such a Nuclear Over-reactor!

nuclear over-reactor by ccplaya December 31, 2016