Brain Stain 

When something is stuck in your head, typically a song or tune/beat, that just won't go away like a bad stain.
See also "Ear Worm"

I've got brain stain from that song on the TV advert, I can't get it out of my head and I don't know the artist!

Brain Stain by oretisktick October 25, 2023

Brain Drain 

A turn of phrase meant to insult either yourself or others for their foolishness or stupidity to the point of it seeming as if there brain is leaking out of their own skull, hence brain drain

A friend that is ordinarily quite adept at chess, horribly blunders an obvious play, the only possible explanation being a severe brain drain at the time.

Hungario: The pawn was adjacent to your queen, there want even any threat of taking it, what happened?
Klempt: My bad, serious case of Brain Drain over here i guess.

Brain Drain by BiasHyperion October 27, 2023

bumpy brails 

When the areola on a females breast surrounding the nipple has numerous small bumps.

Damn, Caroline has some serious bumpy brails. I felt like Ray Charles tryin to read her tits all night.

bumpy brails by Rob_D December 14, 2008

Sunday Brain 

The fuzzy logic that dominates your thought process on a Sunday, usually the result of a long Saturday night.

Rob: Yo Liam, why did you order chicken fried steak from the 5-point. Bad order man. What were you thinking?
Liam: I dunno. Sunday Brain I guess.

Sunday Brain by Comeonfeelthe August 22, 2008

CLOGGED BRAIN 

STUPID, DAMN, IDIOT, USELESS, AIRHEAD

PLEASE HIRE A PLUMBER TO CLEAR YOUR CLOGGED BRAIN.

CLOGGED BRAIN by GHENYGHEN April 18, 2010

Mud Brain 

Occurs during to the seemingly FOREVER period of time between running out of ADD meds and becoming eligible to refill. In most cases, said person becomes unable to function in any sort of productive or sensible way. Withdrawal symptoms include but aren’t limited to; complete loss of ability to focus,

Nan: Oh my god, dude. I have total mud brain! Can't refill for 6 days!
Bert: I know, right?
Nan: I’m gonna go outside and drag my face on the concrete
Bert: Chewbacca does not live on Endor

Mud Brain by ChellChell September 9, 2010

Bread brain 

A very lethal disease brought on by the over-consumption of bread. Usually prevented via a future version of yourself coming back and warning you to stop, or just general lack of hunger.

Bing, although warned by his future self, died of bread brain in Bing Radio 2... Yet somehow revived for the next episode

Bread brain by Perrythepomlypomofmuchpomlines June 8, 2011