smooth brain- it is someone that is an idiot. this means that the more ripples you have on your brain, the smarter you are. So in conclusion, if you got a smooth brain then you are a dumb ass.
1.Jim sucks at chess he is such a smooth brain
2. Jim: HOWDY Y'ALL! Darry: pfft smooth brain Bryson: what a dumbass
2. Jim: HOWDY Y'ALL! Darry: pfft smooth brain Bryson: what a dumbass
by yomama.coma December 04, 2020
A chill and easy going person who knows how to keep people happy, comfortable, and interested in life. From wherever begins to wherever it goes to. Lots of love to all the smooth brains out there.
I hope to read stories about people who had a moment where a smooth brain appeared and made an otherwise situation that much better.
by whatshouldIeatforlunch December 08, 2020
A stupid person; it refers to the lack of surface area on an individual's brain. The general thought is that the more surface area (wrinkles, creases, etc.) a brain has, the smarter the person is. Conversely, a person with a smooth brain (no wrinkles) has less surface area and would therefore be stupid.
That fucking smooth brain put his shirt on backwards again...
That smooth brain is dumber than a pile of shit.
That smooth brain is dumber than a pile of shit.
by Tip Tank May 15, 2011
J: O, you have a smooth brain
O: Does this mean I have a cute brain?
*L, M, N, O, and P all start laughing*
O: Does this mean I have a cute brain?
*L, M, N, O, and P all start laughing*
by Ace the simp May 06, 2023
An insult referring to the absence of wrinkles present in the human telencephalon(cerebrum) -- the largest region of the mammalian brain. Literally implying idiocy at a physiological level.
by drastic_quench May 23, 2008
Opposite of big brain. Smooth brain refers to an idiot or someone dumb. Neuroscientists believe the more folds you have in your brain means the smarter you are. Therefore if you are called smooth brain, you have less folds and therefore dumb.
How did you forget to lock the door? Good move, smooth brain.
You don’t know basic math? Smooth brain 🙄
You don’t know basic math? Smooth brain 🙄
by TheoPham September 14, 2019
adj. word to describe people that are slow or stupid
adj. describes unfunny, uncool people that are lame
adj. describes unfunny, uncool people that are lame
by dirtydikdan October 20, 2021