Donkey Brains 

Something the children in Frank Reynolds neighborhood would call him after he was released from the "nitwit farm".

Because of this, young Frankie requested his mother take them back to the facility so the medical staff could exonerate him, via certificate, of having "donkey brains" in hopes the children would stop teasing him.

Driving while holding a bowl of cereal is "donkey brained".
Even being at a complete stop before taking a bite, still proves one to have "donkey brains".

Donkey Brains by Dog Abortionist February 10, 2022

donkey brains 

A person, usually a woman, who has the brains of a donkey

That poor girl is an idiot, she must have donkey brains

donkey brains by realniggas337 January 1, 2017

Donkey-brained 

A term coined by the great Charlie Kelly meaning someone who possesses inferior intelligence and a lack of common sense, similar to a donkey, or activity that would suggest such.

Dennis eating cereal while driving was completely Donkey-brained.

Donkey-brained by TurkTurkleton June 6, 2013