smoothbrain
Lacking mental wrinkles
Smoothbrain is internet slang for a stupid person, invoking the image of a brain without folds or wrinkles—the convolutions that increase surface area and cognitive capacity.
The insult suggests someone so unintelligent their brain is literally underdeveloped: Imagine being such a smoothbrain that you fall for that scam.
Often used playfully in online communities.
idiot
Foolish, senseless person
fool · dunce · blockhead · numbskull · airhead · knucklehead · bonehead · dolt · nitwit · dope
uninformed
Lacking necessary knowledge
unaware · simple · gullible · dense · thick · slow · vacant · shallow · incurious · unthinking
smoothbraingenius
Person of rare brilliance
big brain · galaxy brain · intellectual · brainiac · mastermind
smooth, brain, smoother, smoothest, smoothly, smoothness, smoothen, smoothed, smoothing