The term "Smooth Brain" refers to someone unintelligent, or an action that could be classified as unintelligent. Neuroscientists believe that the more folds your brain has, the more surface area neurons have, thus, leading to higher intelligence. However, without these folds, there won't be as large of a surface area for your neurons, which leads to idiocy, or Smooth Brainedness.
"This buttery smooth brained idiot stuck a goddamn fork in the power outlet."
"That was the most smooth brained sentence I've ever stumbled across in my 25 years on this planet."
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If your brain is smooth, it means your dumber.
by Bob IS Joe December 22, 2021
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A greeting for someone so cool, they're like a bucketful of smoothness.
"Ooooh, look at you lookin' all sharp. What's up, Smooth Bucket?"
by C Monty March 27, 2021
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Smooth on the Decks and on the Ladies
"Man did you hear Sammy Smooths set last night!!"

"Who the fuck is Sammy Smooth"

"He's Smooth on the Decks and on the Ladies"
by SwamC April 30, 2023
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A Tiktoker who is amazing at what he does. He is unbelievably good at what he does...making videos. He is a fun guy to be around, a guy who befriends anyone. He can be rather charming, and sometimes adorable.
Smooth Shadow is quite honestly the best TikToker ever.
by ErIk10891000 November 23, 2020
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