When you take loose scrotum skin and bunch it in your hand. The result resembles a soft brainy tissue.
Sabe's took his scrot skin and made brain matter of it, which he then played with for several hours.
by Dill Nut August 7, 2008
Its when parts of your brain go mush and stuff. It is abbreviated as NBM
Guy with NBM: "You smell like turkey. I'm a Train."
Other Guy: "Woah man, you got a serious case of Neglected brain-matter!"
by n00bs4sale September 6, 2016
EMOTIONS that are SHIT from the BRAIN which is toxic. One song TRIPS A 404 EXCEPTION that is on the record is useful SHIT from the brain toxic and nontoxic.
This is , "off the record" , I am , " A FUCKING IDIOT" , is BRAIN WASTE MATTER , as I said the wrong things as it is OK to be homosexual , but my STrIPE got me into black and white difficulties. On the record EMOTIONS SAMANTHA SANG, LOSING MY RELIGION REM and BLACK AND WHITE THREE DOG NIGHT is BRAIN WASTE MATTER as they are useful which is ART and INFAMY together.