Getting so Drunk that you forget most of what you did the last time you got drunk, and had shit for brains. hence Shit Brained"
"boy i got shit brained, i didnt know what the hell i was doing, i think i had sex with a postbox"
by the Real B-Man April 11, 2010
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The Shit Idiot Brain Fungus (or the S.I.B.F. as it is considered in the medical community), is one of the most deadly diseases known to mankind. It strikes at the cerebrum section of the brain and completely shuts it down. This leaves the victim in a state of eternal idiocy and stupidity. This condition affects countless people worldwide, and the symptoms are completely unnoticeable until it is far too late.

This disease was first invented as a bioweapon by Dr. J while he was locked in the basement of 2000 Presidential candidate Alfred Gorestrum (Al Gore). He planned to use this bioweapon on Senator Ted Cruz of Texas in an attempt to make him a raving dumbass. Little did Dr. J know, however, was that Ted Cruz was already the dumbest of raving dumbasses. Unfortunately, the fungus did spread to Ted Cruz and he is now a walking and talking gravemind of the fungus and looks to spread it to all those he comes into contact with and speaks to.

I am writing this definition from my bunker in Southern Kosovo in the hope that some wandering internet-goer finds this and puts an end to the fungus, and Ted Cruz, for once and for all. This is my last message to the world, goodbye.
Person 1: "Yo, you want to hop on the Roblox Pacer Test Game, I really think that it might be a very enjoyable experience."

Person 2: "Bro what the fuck are you saying, have you or a loved one been in contact with a carrier of the Shit Idiot Brain Fungus (S.I.B.F.) or Ted Cruz himself in the past 30 days? You seem like you've come down with a real bad case of it."

Person 1: "Oh no, what if you're rig--- djasdfuiho asdhfgiubsf." *collapses to the floor in a broken heap and as a husk of his former self*
by BizarrePolicy May 5, 2021
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Used in a comical way, someone who his not only dumb, but a faggot
Bob "Like my sexy Mac Book Air"

Eddie "Lol that makes you a shit-brain-cock-master
by f.u.k April 29, 2009
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Something you just did when you did or said something really, really, really stupid.
"Americans are all obese"
"You just shit out your brains, didn't you?"
"No they all are"
"You definitely just shit out your brains."
by PI55 September 21, 2018
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Used as an insult to a person, after doing something dumb.
Guy 1: YO, SHIT-FOR-BRAINS, WHAT GODDAMN COLOR IS THIS?? HUH?? YOU FUCKING BLIND MOTHERFUCKER, WHO THE FUCK DO YOU THINK YOU ARE, COMING HERE AND SHITTING IN MY MAILBOX, PLAYING MY GODDAMN VIDEO GAMES?? YOU'RE GONNA LEARN ABOUT COLORS, YOU DUMB FORESKIN.

Guy 2: STOP YELLING AT ME
by TheNerdCrusader May 29, 2022
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when you don't have a clue of what your doing
Damn! Bob this is so easy... But apparently not cause you have shit for brains.....
by purde May 24, 2018
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