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

To make a situation or a set of numbers as smooth as humanly possible, smoother even than a babies butt. This often results in ignoring the details and only looking at hot trends.
Jake, can you please review my costing spreadsheet, I know there’s errors in it but I need you to take a look at it and peanut butter smooth it over before you leave.
by Gov’t Cheese November 29, 2022

by qqquota December 14, 2024

by The Gruchinator August 18, 2016

John: Hey Bob it's been like three weeks since we have hung out!
Bob: I know right, it's been a smooth minute.
Bob: I know right, it's been a smooth minute.
by Dirtyjoo January 19, 2014

by Lilmamachick August 17, 2018

by The illustrious moustache May 7, 2018
