Shit for brains actually come from the custom of Latvians who, at one time, used fecal matter to stuff a dead bodies crainial orifices before burial. This was an inexpensive method of getting rid of a lot of shit and saving a few bucks.
However, during WW2 GI Joes serving in Europe misunderstood the references and took it to mean an insult.
They began using the saying at home in the USA
Hey Gustov, you got shitska for brainskis? Please to be passing some over, I need for Uncle Batinov's funeral.
SHITSKA FOR BRAINSKIS translated: shit-for-brains.
by DEPTHCHRGR August 31, 2006
Get the shit-for-brains mug.
Man i just met the biggest shit for brains ever! Really? yeah he was worse than Donald Trump! .. Very Doubtful!
by Ameircaa February 18, 2016
Get the shit for brains mug.
Oh my gosh, did you really believe that Burger King had come out with a new diet called the Angus diet, you have shit for brains.
by Light Joker October 25, 2004
Get the have shit for brains mug.
One who displays a lack of common sense
A fuckup
Joe really screwed up the assignment. He's such a shit fer brains.
by Fred January 19, 2003
Get the Shit fer brains mug.
A southern term for a very dumb individual, is often used to give someone hell if they mess up on something simple.
"Man I tell you, that boy's got shit-fer-brains, he couldn't tell his own ass from a hole in the ground
by Eusophocleas June 27, 2016
Get the Shit-fer-brains mug.
To shit so hard you feel as though your vital organs have shifted and you're not sure if something you needed blasted out.
During Patrick's trip to Mexico, he drank the water and shit your brains out.
by Comic83 June 26, 2015
Get the shit your brains out mug.