Mouth for brains

A word used to describe a person who has no brain. Where their brain should be there is only another mouth that never shuts up. Interchangeable with loud mouth, big mouth, motor mouth etc

Hey, mouth for brains, STFU!

by ElbowthehappyvikingII August 19, 2010

bang her brains out

To fuck her like there's no tomorrow.

"How hard are you going to fuck that chick tonight? "
"Im going to bang her brains out."

by theoneandonlymanlol June 14, 2015

Bullshit Baffles Brains

To talk or write absolute nonsense but do so with such conviction everyone comes to believe it unquestioningly.

Bullshit baffles brains is a technique used with great effect by modern politicians and the mainstream media.

by dnptyf November 13, 2016

Fucking your brains out

Having sex until until fully exhausted

Girl 1 "Henry came home yesterday horny as anything"
Girl 2 " Did you spend your night fucking your brains out?"
Girl 1 " Yep - we went at it all night like rabbits"

by Grandal's grammar August 23, 2016

brainstrain

1-when you are trying so hard to work out something far too complex for your state of mind at the present time that you get a headache.

2-when your so mentally exhausted thinking of minor simple things is a massive effort.

etc.

1-If there was a fence that was like a grid, and the total volume of the fence was 3ft cubed, and the fence was 6 foot tall. if the fence was evenly distributed and a dragonfly measuring 1” height and 4” width, and it could only fly up to 4', what is the probability it will hit the fence, flying straight at the fence, at any given point within the range given.
reading that gave me massive brainstrain

2- what is 5+5+5+5+7+5? too tired, giving me brainstrain

by BrAiNsTrAinNN March 28, 2011

Brainsturbating

When you masturbate without any physical contact, stimulating your sexual nerves by using brainwaves to arouse yourself and by fooling your reproductive parts into believing there is actual physical contact. ATTENTION : This requires masterhood training.

Jeff was armless yet he could still pleasure himself by brainsturbating since he was a wizard.

by UkuleleSavage May 8, 2018

Nuts for Brains

A male who thinks with his dick rather than his brain. Follows what his sexuality says to do instead of taking the path of common sense or intelligence.

"Can you believe John? That's the third girl he's screwed this week and he's SUPPOSED to be dating Stacy!"
"He must have nuts for brains."

by bottomofthebikini May 28, 2009