pea-brain

noun

1. informal.
   a foolish or unintelligent person

Example Sentences

I think, in my small pea brain, that the issue is the person giving the nod, and the person who has the money bag.

From Washington Post

"Like a pea brain," he says, he responded to all of their allegations.

From Seattle Times

My pea brain spins, yawns, then sings Waterloo.

From Forbes

One thing should be implanted in that pea brain�that respectable murderers like himself are no longer inviolable.

From Time Magazine Archive