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.

1. Blue Monday is the most depressing day of the year, calculated by Dr. Cliff Arnall, a researcher at the University of Cardiff's Center for Lifelong Learning.
Factors used to calculate the date included weather conditions, debt level, time since Christmas, time since failing our New Year's resolutions, low motivation and feeling the need to take action.

In 2005 the date was calculated as January 24th, in 2006 it was January 23rd, and in 2007 it was January 22nd.

2. A song by the hard rock band Orgy from their album Candy Ass.

A way of calling somebody very stupid that requires them to be smart, in order to understand.

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.

A derogatory term used to describe someone after they have done something unintelligent, clumsy, or foolish. This term implies a below average intelligence due to an abnormally shaped brain. The expression is used almost exclusively for criticism.

Smoothing out your brain will also negatively affect your intelligence and reason, this is precisely why smooth-brainers are often called "stupid hippies" or "vegans" by lower class citizens because they seem to become increasingly stupid as they level up. This will however all pay off in the end, when you reach the ultimate goal of unity with the universe. The path to godlike status is and literally goes through the "rough", which is also why around half of the worlds population decide to stay in this lower level of "rough" class brainers, which usually leads to a steady decline of their life into a criminal and abuse filled life-path, which always tends to end in horrible death.

Very smart person. their brain is smooth the is no resistance to knowledge