smooth brain
Lacking mental wrinkles
Smooth brain is internet slang for a stupid person.
The insult references the wrinkled surface of the human brain—more folds supposedly indicate greater intelligence, so a smooth brain would be featureless and simple.
Often used playfully: That was a real smooth brain moment.
The adjective form is smooth-brained.
- unintelligentLacking cognitive ability
- brainlessDevoid of intelligence
- sulciCerebral cortex grooves
- gyriRaised cortical folds
- dumbWitless or mute
meme · irony · troll · cringe · NPC · parody · sarcasm · uncreased · self-deprecation · koala · cortex · absurdity · even · unwrinkled · exaggeration · brainlet · flat · sleek
- Mind Idiomssharp mind, open mind, quick wit, steel trap, sound mind
intelligence/cognitive ability
smooth braingenius
Person of rare brilliance
big brain · galaxy brain · intellectual · Einstein · brainiac
smooth, brain, smoothly, smoothness, smoother, smoothest, smoothen, brains, brained