What is Crap For Brains?
1.
1. Stupid. Careless.
2. A person evincing these characteristics.
A milder version of
1. "What a crap for brains thing to do."
2. "That crap for brains Bob left the oven on when he left for Jamaica."
See
2.
meaning ultra stupid,like their brains were taken out and replaced by crap;
"Man,I knew you had Crap for brains,but your crap for brains has crap for brains"
3.
Pessimistic way of refering to everyone.
Hey, crap for brains, how's it going??
4.
Literally having shit in your skull, in place of brains.
Stu has shit for brains, that fools needs to FFIO.