brainer

when you're excited to learn something new, eg. math, science. it's basically a boner in your brain a.ka brainer.

professor farnsworth: all of this knowledge is giving me a raging brainer!!!

by soma689 April 25, 2013

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.

by MischiefMaker December 28, 2003

no-brainer

Something so obvious to be correct/appropriate, that it requires no contemplation to decide on.

It was a no-brainer for Zack to wear a condom when he banged that disease infected whore (ewwwww).

by efulitz January 8, 2004

brainer

Slang for someone who gives oral sex

"Yo you know Shayna's a brainer right?"
"Word?"
"Ye man; go chop dat"

by TheCurryFairy September 7, 2006

Brainer

A Brainer is when you do something because it had to be done and you knew it was the right thing to do.

Brainer
1.You gave that guy some of your bone marrow well that's a brainer.

by WolfBrother13le April 24, 2013

the brainer

It's when you grab the skin between your hanging balls and your cock and then tighten your grip all the way up to your balls forcing them to really stick out, this makes your sac look veiny and bumpy like the top of a brain.

I asked my girl to examine a spot in my testes, when she came in for a closer look, I tightened up my grip and hit her in the eye with the brainer.

by allen powell January 16, 2006

brainer

The satisfaction you get when learning something you didn't know before or to share something else with someone who didn't know about it before. Like a boner, but with your brain.

Mary: John must be the most common name in the world.

John: No, Muhammad is the most common name ever.

Mary: Oh. I didn't know that.

Tommy: Total brainer.

by Three years later July 17, 2010