by Wormy brain August 2, 2020

When you act on primal instincts and drives, such as a desire to mate, eat or procure shelter. Is in opposition of acting rationally.
Alec: Bro you know she isn't into you why are still trying to get laid?
Mathew: I don't know man, total monkey brain.
Mathew: I don't know man, total monkey brain.
by drmaurice February 1, 2024

by jamundertoast July 18, 2016

by dirty_dog_farmer February 4, 2015

by autistic cancer downs boy March 9, 2017

something that many people lack. Some have it but refuse to make it of use, matter of fact many of us have it but it has cobwebs because of lack of use. Please use your brain!
stranger: omg do you have a brain?
stranger2: you mean that pink thing in my skull?
stranger1: yeah!
stranger2: ya! but i just don't use it
stranger1:brainless!
stranger2: you mean that pink thing in my skull?
stranger1: yeah!
stranger2: ya! but i just don't use it
stranger1:brainless!
by jivranchy June 5, 2023

Engineers have clown brains. What makes sense to them makes no sense to anyone else. It’s like a circus with clowns in there.
by Clowns are coming May 1, 2018
