Brain stain

Information now in your head that you don’t want to be there.

Caitlyn Jenner’s performance on The Masked Singer left a brain stain.

by La Vraie Princesse January 17, 2023

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!

by oretisktick October 25, 2023

Brain Stain

The act of holding your testicles in your hand, so that they resemble a brain. Then placing them on someone, thus giving them a brain stain.

I totally brain stained Johnny last night in his sleep.

by ClitorisCommander1234 June 7, 2011

brain stain

the pesky mess left after someone's brain has splattered; usually left on purpose, out of anger and frustration

I'm so pissed at you, there's gonna be brain stains all over your shit when you get home!

by alyjane November 22, 2011

brain stain

When a man nuts on your forehead.

Hey baby gimme a brain stain.

by AlecLEE41 July 30, 2022