lame brain 

stupid person, a complete moron

- I simply don't get how Jack joined the police. It's obvious that he is a lame brain.

lame brain by stuknoxville May 22, 2024

Australian Brain Freeze 

The "Australian Brain Freeze" is the sex act of putting an ice cube in a vagina. It's named after Australia because Australia is known as the land down under.

My girlfriend's asked me to do the Australian Brain Freeze for her last night. It was horrible.

Australian Brain Freeze by BubblesØ6 May 22, 2024

Smooth brain 

Smooth brain is an insult that refers to an unintelligent person. Supposedly, the intricacy of one's knowledge is represented by the wrinkles on their brain. If their brain is smooth and lacks wrinkles, their knowledge lacks intricacy, and they are therefore stupid.

What a smooth brain that person is.

Smooth brain by GenericGuy3456 May 25, 2024

Smooth brain 

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.

Smooth brain by Truebeing May 30, 2024

iPhone brain 

When you have a very big brain but in a different way.

Ririka has Galaxy brain.

Kanade has iPhone brain!

You know what galaxy mean?

"Smartphone."

iPhone brain by TransKitten June 1, 2024

Doof brain 

When one feels as if they are permanently fried after a session

“Ohhh dude, I have the worst doof brain today”

Doof brain by Wubbalubbadubdub101010 January 5, 2025

Rupert Brain 

Derived from an edited GIF of Klaus Schwab. Upon seeing the GIF a strapping young fellow said the following words, "Rupert Brain" And the rest is history...

"Rupert, Rupert, Rupert Brain, Rupert Brain, Rupert Brain, Rupert, Rupert, Rupert Brain, Ru' Rupert, Rupert Brain" *To the tune of 'In The Hall Of The Mountain King'

Rupert Brain by Simon Slug Sumoner January 6, 2025