by Ron Jeremy December 21, 2004

Forgetting things on a Monday because your brain is still on the weekend; The result of a Mondaze which causes you to forget things; a cop-out for forgetting things on Monday.
by G8rSoftball15 February 10, 2010

Used to refer to someone that is unintelligent.
Derived from people who use creativity as an excuse for their lack of intelligence.
Derived from people who use creativity as an excuse for their lack of intelligence.
James couldn't hold in his frustration at how art brained his friend is.
"Ethan can't comprehend division, he's such an art brain."
"Ethan can't comprehend division, he's such an art brain."
by Axidation February 22, 2022

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."
"He must have nuts for brains."
by bottomofthebikini May 28, 2009

What happens when you've had so many carbs for lunch (or not) that you can no longer function properly.
I'm sorry I forgot (insert the stupid thing that you did that you are apologizing for here). I had lunch brain.
by Sue Bell January 13, 2009

When someone is always on your mind and its cannot be stopped/cured. Constant thought about that person means they gave you a Brain STD!
Girl 1:Damn Ricky is so hot! I can't get him out of my mind!
Girl 2: Look's like you got a Ricky Brain STD!
Girl 2: Look's like you got a Ricky Brain STD!
by footballfreak9 August 22, 2011
