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.
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."
"Sheesh man I don't know. Solid arc brain though."
by Trumor and Mentis January 30, 2022
Get the Arc Brainmug. Person 1: Show me your code.
Person 2: function false() {return false}
Person 1: That is some omega brain code.
Person 2: function false() {return false}
Person 1: That is some omega brain code.
by Coar Idor March 31, 2022
Get the Omega Brainmug. He just did the brain-sane!
by Jackson Sullivan October 11, 2023
Get the Brain-sanemug. (verb) to mess with a member of the opposite sex's head, usually by women. Originates from the comedy routine of comedian Dane Cook.
by strongbadia7 December 9, 2007
Get the brain-ninja'dmug. by straightoutofseattle May 2, 2014
Get the kook brainmug. 
When a person loses rational thought because they are overcome with an inhuman urge to gorge on fatty junk food and let themselves completely go.
He was barely able to breathe, struggling to sit up against the onset of a severe food coma and blamed pig brain taking over as he reached for another box of donuts instead.
by Analytico April 7, 2023
Get the pig brainmug.