CockBrain

someone who says something stupid cuz they been sucking to much.

person1: yo did u see the sky change orange?
person2: dog what is u talkin bout u gots that CockBrain!

by Matt "Big Dog" Dudley September 08, 2008

cockbrain

when the male uses his cock as a secondary brain, often resulting in unfortunate choices and loss of girlfriend and or bodily harm caused by aforementioned girlfriend.

man i was so cockbrain last night, i had a great time but my girlfriend kicked me in the sack this morning

by IMMA MAN December 03, 2009

cockbrain

A girl who is always talking about penises.

Kristen is being a huge cockbrain today.

by Johnny Hancock March 21, 2007

cockbrain

a guy who only thinks about his dick and goes from one girl to another.

john is such a cockbrain--he was just dating bridget but after he fucked her he dumped her for anne

by youngandinsane March 26, 2007

cockbrain

When a guy hits a girl in the face with his penis. This often happens when a girl is giving a guy head. Usually an absurd gesture that a man will do to a promiscuous woman.

Guy: "So i was getting with Cheryl, and I totally cockbrained her!"

Guy 2: "Dude, she's got a shiner now!"

by Blob09 April 11, 2010