no brains 

someone that has such a small brain that people think it doesn't exist

omg you have no brains

no brains by ededxde32wdsaxawere January 5, 2021

All brawn and no brains 

Idiom

Having great power or physical strength but lacking mental acuity or intelligence.

He may have been a good football player in high school, but he was all brawn and no brains, so he didn't get into any colleges.

All brawn and no brains by Zami Karzai September 1, 2018

Balls No Brains 

Something you either need massive balls to do or zero brains.

Example with no brains

Bobby “Why is that guy riding a motorcycle with no helmet at 130 mile per hour (209 Kilometers per hour)?”
Brandon “That’s because he has a bad case of Balls No Brains”

Example with huge balls

Bobby “damn! That guy just punched one of the robbers in the face, too bad he’s about to get shot.”
Brandon “That guys got a serious Balls No Brains way of thinking.”

Balls No Brains by Closet Gayng October 21, 2021

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

no brainer

could be used as in "definetly" or "of course"

Jim: Do you have to put your marshmallow in the fire?

Clark: Dude, it's a no brainer, as a rule of thumb campers should put their marshmallow in the fire.

no brainer by Nosseir April 23, 2007

no brainer

A question with an obvious response.

Dude 1: Will you take the money?

Dude 2: Yes I will! It's a no brainer.

no brainer by nick_g August 16, 2011

no brainer

A dumb question or response. Something one shouldn't even have to think about it.

Dude1: Hey, man, where's the basement?
Dude2: Try downstairs, bright spark!

Girl: Whales are... big.

no brainer by MischiefMaker December 28, 2003