Mush-Brain 

The result occuring a day or so after smoking spice (such as K2) in which you experience slight memory loss and feel rather stupid for the whole day. Experts believe this is just a mental paranoia experience that can lead you to think you have something wrong with your brain.

Johnny- Fuck, I forgot about that homework, dude!
Tom- Probably cause of that K2 you smoked the other day.
Johnny- I think my brain is messed up dude!
Tom- You have massive Mush-Brain!
Johnny- Fuck Mush-Brain.

Mush-Brain by UndercoverStoner February 21, 2011

mush brain 

1.Old, burnt out,
2.What happens when you party and drink to much,
3.Used and abused also see maxhardcore,
4.Unaware of ones sorroundings,
5.One who cheats on tic-tac-toe,
6.Cracked out,
7.Why someone originated the qoute "theres a sucker born every minute",
8.Usually a girl that talks sh!t about something see has no idea about then you see her out and about and tries to say high, and her heels are ugly and has a flat butt. most often named nina.

red: do you want to chill with brad tonight
SEZk: naw mayn, your boy brad is such a mush brain.
red: hahahaha thats true. awsome dude

lucas: mayn that girl is on fire!
SEZK: get that! i got her on volume 2 and 3.
lucas: what ya talking bout sezk?
Sezk: ya didnt know? strait much brain. check phone photos.
Lucas: oh look!.. there she is.. with some lil boy shorts.

mush brain by SEZK GAMBINO June 21, 2007

mush brain 

Decreased brain function, including (but not limited to) slower reflexes, confusion, and a lower IQ. This condition is observed:

1. In workers who spend greater than 8 hours a day and/or greater than 30 hours a week on excel

2. In North American citizens (particularly men) on the Monday after the Super Bowl

3. In athletes who have experienced many concussions

The professional hockey player was forced to end his career early due to mush brain after having numerous severe

mush brain by Mush Brain Patrol March 14, 2012

Mush Brain 

A medical condition affecting the brain after listen to Fox News for three(3) consecutive hours.

He developed MUSH BRAIN after listening to Hannity, O'reilly and Great Van S in consecutive order.

He was fine doctor until he watched Fox for three hours when his brain turned to mush.

Mush Brain by Prince of Wheels July 25, 2009

Mush Brain 

An adjective used to describe someone who has no sense of self and is really out of place. "Mush Brain" is also used as a verb that means doing something stupid.

Adjective: Mikhail is so mush brain that he can't even speak with proper grammar.

Verb: Don't go full mush brain before watching anime!

Mush Brain by jalapeno101 July 8, 2021

Mush Brain 

The effects the day after taking any form of the drug named MDMA. Usually involves laziness, slight depression, & slight memory loss.

Man: I don't feel like doing shit today. I have mush brain from partying last night.

Mush Brain by Vyr0z February 12, 2012

Mush brain 

The mental status of an individual after a long night of indulging in copious amounts of alcoholic beverages, usually but not limited to Vegas bombs or an unhealthy count of bush light. Said individual is not able to respond to questions in proper English or make any decisions other than hydrating and sleeping.

"Hey do you want to get some breakfast?"
"uhh duhh."
"What's wrong have you gotten mush brain?"

Mush brain by Bob Elliot November 28, 2016