smooth brain

See also: smoothbrain

English

Alternative forms

• smoothbrain

Etymology

Nominalization of smooth-brained, possibly by reference to lissencephaly (a brain abnormality, usually resulting in severe developmental delay, characterized by the surface of the brain being smooth), or simply by reference to the human brain typically being wrinkly.

Noun

smooth brain (plural smooth brains) (derogatory, offensive)

1. A stupid person.

   I could not have made it easier for you smooth brains, yet you still messed up!

2. Used other than figuratively or idiomatically: see smooth,‎ brain.