brain ninja 

A person with the ability to insert thoughts or ideas into another's head that does not cause immediate, but rather long term lingering mental anguish, usually having comedic value.

Walk up to someone. Look at them thoughtfully for a moment. Sing, "I've got a golden ticket." Walk away. BAM, you're a brain ninja.

brain ninja by River City Smokers January 17, 2008

brain ninja 

someone who has the ability to get into your head and fuck with your mind.

Jess: We were having a fight bout (something stupid that was Jess' fault) but i totally turned it around and made him feel bad bout it.
Ashlee: wow, you're such a brain ninja jess!

brain ninja by inimitable07 April 4, 2009

brain ninja 

Title given to girls by comedian Dane Cook. Girls have the power to fuck with a guy's mind by saying something so simple that it eventually drives them crazy.

Girls are brain ninjas! They know how to get in there with their katanas and cut ya! And then disappear into the night!

brain ninja by brainninja14 December 1, 2009

brain-ninja'd 

(verb) to mess with a member of the opposite sex's head, usually by women. Originates from the comedy routine of comedian Dane Cook.

"Peter needed to talk after Maria brain-ninja'd him."

brain-ninja'd by strongbadia7 December 9, 2007

brain ninja'd 

when your in a horrible "relationshit" and you get in a fight one day and the girlfriend happens to say a comment that will seem at first like the worst come back ever but soon will make you so friggin' angry that you go make a ass out of yourself in front of her

yeah steve i completely was fucking brain ninja'd, i walked in and just sounded like a complete dumm shit

brain ninja'd by dickydick May 31, 2007

brain ninja'd  

A medical term used to describe when an extrodinary woman leaves you speechless.

Ben: You always ignore me when I call you.
Brittany: Ya well you never leave a message
Ben: (speechless)
Brittany: Ya you've been brain ninja'd !

brain ninja'd by Benny Frederick April 7, 2009

Ninja Brain

A person who says silly things like they mean it....that makes absolutely no sense to normal people.

She is such a ninja brain for sayin sh*t like that.

Ninja Brain by milliondollagurl March 19, 2010