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Arc Brain 

To completely space out and lose yourself mentally in a fictional scenario, plot or thought. The source of the thoughts can either be internal or external, such as a movie plot or just a conversation about a certain topic.

Multiple people people can be affected by arc brain together if they mindlessly continue rabbling, spouting coherent nonsense but yet still understanding one another, somehow sticking to the original topic.

An example of this phenomena could be when you watch a film with a friend and you notice that one of you have been staring into the void, sitting completely still and silent. Then suddenly that person presents a sub plot about something unimportant or an extremely detailed analysis of something completely irrelevant to the film.

Arc brain commonly happens while under the influence of marijuana.
While watching Encanto, "How do you think the villages local economy is affected by the loss of the madrigal family's magical power?"

"Sheesh man I don't know. Solid arc brain though."
Arc Brain by Trumor and Mentis January 29, 2022
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koala brain 

person 1: get ot of here you koala brain
person 2: shut up nerd
koala brain by peter‽ February 5, 2022
Related Words

GORILLA BRAIN 

The art of small brain activity in relation to everyday occurrences.
Emem: Yoo that nigga Matthew lit the J yesterday with the filter still in his mouth.
Felix: Bruh mans def got that Gorilla Brain.

Philos: Broo you never tried smoking like that though?!
GORILLA BRAIN by northerntitties February 20, 2022

Gym Brain 

During or After a workout. A person with Gym Brain tends to forget words & act completely stupid.
I can’t think I got Gym Brain
Gym Brain by pixelhuntr February 23, 2022

Blue Brain 

Term to describe someone who seems to have lost all of their intelligence after dying their hair blue.
That girl over there is the dumbest girl I know. She is a blue brain.
Blue Brain by BestD!ck5uck3r March 16, 2022

Crystal Brain 

A person that's so much of an idiot that you could actually see through their brain, and of course there is no brain cells.
John: I just broke your cat's leg for fun!
Miranda: You fucking crystal brain, you're so fucking stupid that everyone, even the stupid know you're stupid
Crystal Brain by LoogieSolos April 2, 2022

Space brain 

When your thoughts are all over the place and/or you are dissociating. Seen in neurodivergent people, and high people.
Friend one: Got space brain today
Friend two: Mood
Friend one: I didnt know you smoke weed too
Friend two: Oh. I just have ADHD
Space brain by Call me ur dad April 7, 2022