A derogatory term used to describe an individual perceived as lacking intelligence and exhibiting quickness to anger. The term is inspired by the koala, a mammal known for its aggressive behavior and cognitive limitations. Despite having a diet exclusively consisting of eucalyptus leaves, a koala might starve if presented with pre-picked eucalyptus, underscoring the reference to an extreme lack of problem-solving ability.
She kept arguing that the Earth is flat, and everyone started to realize she might just be a smooth brain.
His blind support for the Republican Party’s climate change denial made him seem like a smooth brain, ignoring overwhelming scientific evidence.
His blind support for the Republican Party’s climate change denial made him seem like a smooth brain, ignoring overwhelming scientific evidence.
by Truebeing May 30, 2024

How "Smooth" should be spelled, because "Smooth" seems to end on a sharp cliff, while "Smoothe" ends off in an easy soft way.
"Hey, those tires look smoothe!"
"This is why you have an F in English you retarded chimpanzee of human meat and semen."
"This is why you have an F in English you retarded chimpanzee of human meat and semen."
by fag-inator May 30, 2023

Often used by the same people who use the term genious, smoothe is a word written only before disasters in internet chat rooms
by Penguys March 8, 2018

A gentler way to say "rough draft."
by Pokey89 January 2, 2008

When someone with no teeth gives you a blowjob,
Named after the Australian Gummy Shark and reading too much Hentai
Named after the Australian Gummy Shark and reading too much Hentai
by Dr.DoubleButt October 1, 2021

Terminology used to describe the ride quality of a motorized people mover. Can be a jazzi, can be a car. Ride has to be like it states, both slick, and smooth.
by SliccyThiccy November 20, 2017

Used when describing a females luxuries skin. Only those with the greatest skin care routines can obtain the honor of having Silky Smooth Skin. Antynom to the word musty.
Tom: How was Jessica's last night
Thomas: It was crazy. I couln't stop staring at her Silky Smooth skin from all the Moisturize shes been using.
Tom: Whats so bad about that.
Thomas: Nothing, but when I was staring at her shiny milkers for too long she punched my throat.
Tom: Nice
Thomas: It was crazy. I couln't stop staring at her Silky Smooth skin from all the Moisturize shes been using.
Tom: Whats so bad about that.
Thomas: Nothing, but when I was staring at her shiny milkers for too long she punched my throat.
Tom: Nice
by John Cena's Right Tit November 28, 2020
