A description used for someone who has said or done an incredibly stupid thing, that it is attributed to them having sand on their brain.
Friend 1: Hey dude, Friend 3 still thinks we only use 10% of our brain.
Friend 2: He's got some sand on the brain.
Friend 2: He's got some sand on the brain.
by massivegamer July 16, 2019

One of the best websites, and bands if you have a sense of humor and are easily amused. Check out some of their Rock Videos, be sure to watch "Weeee!" "Dragons and Bees" "ABCs" and their various cartoons
by Xeb September 22, 2003

A well-rounded author and Verita who has been on fanfiction.net since the glory days of the Percy Jackson and the Olympians fandom, before the Sues and Stus took over. She is a very talented photographer and writer. Storm often says she's leaving, but we have yet to see her go.
by Winter Child July 20, 2010

A serious medical condition where fecal matter has replaced brain matter. Dangerous, but with low mortality rate.
Symptoms: Verbal diarrhea, poor decision making skills and acne.
Cure: There is no known cure, recommend quarantine from general populace.
Symptoms: Verbal diarrhea, poor decision making skills and acne.
Cure: There is no known cure, recommend quarantine from general populace.
Exhibit A: George W Bush - Ran up a big bill, couldn't find a WMD or Osama in 2 terms.
Exhibit B: Everyone who voted for him.
Exhibit C: Most politicians.
Usage: Your alcoholic dad has shit for brains, you are a credit to the family.
Exhibit B: Everyone who voted for him.
Exhibit C: Most politicians.
Usage: Your alcoholic dad has shit for brains, you are a credit to the family.
by Bushwhacked June 28, 2011

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.
Dude 1: Hey, did you hear that Mike literally got in an accident with a parked car yesterday!
Dude 2: Ya, I cant believe it. What an absolute smooth-brain.
Dude 2: Ya, I cant believe it. What an absolute smooth-brain.
by Mike N. Ike April 3, 2019

A word used to describe a person who has no brain. Where their brain should be there is only another mouth that never shuts up. Interchangeable with loud mouth, big mouth, motor mouth etc
by ElbowthehappyvikingII August 19, 2010

Originating from pewdiepie and cinnamon toast Ken's minecraft skyblock letsplay, this is used in situations where one individual does something profoundly easy after struggling, or just want to sarcastically talk about their IQ being high while doing small brain things
*Pewds and Ken finally make the cobblestone generator*
Pewds : Big brain!!
*cobblestone generator breaks*
OwO
Pewds : Big brain!!
*cobblestone generator breaks*
OwO
by Nineyearold123 August 8, 2019
