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

TBM (Teenage Brain Mush) 

The point between childhood & adulthood where the brain turns to mush while morphing into intellectualness.

I think my kid is suffering from TBM (Teenage Brain Mush). Why else would he/she be so irrational?

TBM (Teenage Brain Mush) by A mom of teenagers (CC) January 5, 2012

Mushbrain 

n. Any person who believes that feelings outweigh all other considerations, esp. in political speech. Often believes that any facts or evidence presented that may alter his/her feelings must be coming from someone who is one or all of: uneducated, hate filled, mean spirited, superstitious, racists. Uses the term "feels like" or "I feel" when asked for information or a fact.

Rochelle seemed like a classic mushbrain when told the policeman that she feels like the car was blue.

Jeff felt the teacher hated him when he got his grade in English. The teacher said he was a mushbrain, which made him feel better.

Trisha felt like Hilary should have won the primary.

Mushbrain by imotore February 26, 2009

Mushbrain 

Playing too much video games non stop without leaving chair/bed

Your such a mushbrain

Mushbrain by The big MCQ November 2, 2023