rackbrain 

When someone's so fucking stupid and annoying but ceases to believe or see how absolutely fucking retarded and annoying they are

Guy 1: Holy shit Vitos so fucking stupid it hurts.
Guy 2: Yeah I know he's so annoying, fucking rackbrain.

rackbrain by Derphole50 September 11, 2020

backbrain 

The repository of knowledge one retains but doesn't realize one has until such knowledge is necessary in a given situation (e.g. recalling the name/face of an old acquaintance/friend/girlfriend)

"I was walking to work and some guy asked me where I went to school; I thought he was a creep until my backbrain kicked in and I realized we lived on the same floor freshman year."

"I couldn't figure out why she slapped me until my backbrain kicked in and I remembered that I slept with her best friend a few years back."

backbrain by F_Oxford June 19, 2014

rockbrain 

Offensive slur for Tennessean. Particularly of the stereotypical, hick nature, but not necessarily. From the phrase "Rocky Top" that refers to the geological characteristic of Tennessee, but it actually refers to the fact that Tennesseans have rocks for brains.

Fucking rockbrains can't stop leaving their keys and loaded guns in their running cars.

Chattanooga is nice, but it's full of rockbrains.

rockbrain by GoVolsTN September 30, 2020

ratbrain

When wearing shorts you pull out one nut to show a suprised victim, thus ratbrain.

"Hey man wanna see a ratbrain?"
"Huh, a what...oh ewwww!!!"

ratbrain by the killa October 25, 2003

racebrand 

The lingering body markings that remain for hours or even days after a race, essentially "branding" the athlete. Though sometimes looked upon with disdain or confusion by the uninitiated, it is often regarded as a badge of honour by fellow triathletes.

Neither first date jitters, nor her racebrand, would deter Janet from wearing her new dress to dinner at "Chez Pricey" on Thursday night.

racebrand by firefly™ October 10, 2013