Shit-fer-brains

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 26, 2016

Shit fer brains

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