no brain 

Someone so clueless, stupid, or oblivious that you are certain they have nothing between their ears.

I can't believe Jon can't use a tape measure. What a no brain.

no brain by theidgasking May 1, 2014

no brain 

3l337 godfather of all things 0wnag3
n0_131241N
This little guy stole my woman, then dumped her. What a guy! Whooooo!! He always whipps muh ass in Counter-Strike and Unreal Tournament

dude!!!!1!!11!111! n0_131241N just pwned the living hell out of me! Hell he is sexy!

no brain by nicky b December 30, 2003

No brain 

A person who gains personality traits from others, or does what another person likes. Without giving the thought of doing what they like or being themselves

“You’re a NO BRAIN”

No brain by Kittyeater444 November 6, 2023

no-brain 

1. obviously correct so much so that no further consideration is required to find out whether it is correct.
2. (of a girl) not allowing oral sex.

1. The student gave a no-brain answer.
2. Do you like no-brain girls?

no-brain by uttam maharjan November 16, 2010

no brain no pain 

A phrase found in a snowboarding magazine circa 1993. Refers to some extreme snowboarders or skateboarders with unusually low pain threshold or exceptional fearlessness.

Look at that crazy snowboarder...no brain no pain.

no brain no pain by theoryladen July 7, 2006

no-brain moment

When one speaks a thought and immediately regrets it, wishing their mouth had stayed firmly closed whilst being mercilessly mocked.

In the Tough Arms pub...

Me:
Thinks:
"WOW This place reminds me of the sixties"...

Says:
"Hey guys - let's finish our drinks, go to the park and put daffodils in our hair!!!"

Guys:
Mirthful scorn and abuse

Me:
Thinks:
"Fuck. I just had a no-brain moment..."

no-brain moment by PCPuss May 13, 2009

All bone, no brain 

When someone's head/skull is literally filled with inches of skull, and no brain is contained within that skull. Hence, the person's head is "All bone, no brain."

Synonymous to: stupid, idiotic, not intelligent, dumb, thoughtless, ridiculous, childish, adolescent, Reema, unintelligent, etc.

Reema: "I mean yeah I guess I support gay marriage, but I don't want them to get married.... that's weird. "
Abdul: "Jesus Reema you're all bone, no brain."

Reema: "You can read arabic but you don't know what it means? How can you read the quran/a book and not understand what it says??"
Momo: "Bitch it's just like when you read a chemistry book. Damn all bone, no brain. "

All bone, no brain by Grey+ January 26, 2015