by JUAN LOMELI September 2, 2014

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."
"That was the most smooth brained sentence I've ever stumbled across in my 25 years on this planet."
by Imagine Being Smooth Brained June 12, 2022

by BluePandaGiraffe August 13, 2022

To become one with the smoothness
bartholomew: *becomes smoothness god*
jack: holy fucking shit
bartholomew: *gives jack smoothie* enjoy the smoothness my friend
jack: holy fucking shit
bartholomew: *gives jack smoothie* enjoy the smoothness my friend
by fucking dio August 3, 2023

All you gotta hit these hoes with that smooth smooth kiss on their hand, and they gon be throwin that pussy at you...
by KJOMATIC May 11, 2019

No matter how rough somebody tries to look or convince people they are, if they've never spilled any condiments on their clothes, they're a little too smooth and charming to trust, and their definition of human spirit is bullshit.
The smooth guy/girl made many public appearances at parties or on tv shows, but never wearing any of their food.
by Solid Mantis November 22, 2019
