toss brain

noun, derog. an idiot, literally a wank brain or a person whose brain is capable only of masturbation

"Stupid toss brain can't count his nuts twice and get the same answer."

by kiwimich January 30, 2006

Mother Brain

1. Enemy of Samus Aran in the Metroid games "Metroid" and "Super Metroid," Mother Brain is the presumed leader of the Space Pirates and, together with her winged colleague, Ridley, poses a great threat to the Galactic Federation. Armed with her vast intelligence, she seeks to manipulate the power of the Metroids to her advantage.

Typically depicted as resting immobile in an armored case, Mother Brain has also developed other means of defending herself. In "Super Metroid" she demonstrated her combat ability through an enormous bio-mechanical bipedal body- the use of which granted her the mobility she needed to bring her energy beams and bombs to bear against Samus.

Mother Brain was responsible for the slaughter of the "daughter Metroid" of Samus Aran at that same confrontation, adding to the acridness in the feud between the two.

2. an intelligent, reclusive person who remains somewhat guarded and isolated; tends to shy away from those less intelligent than them

1. The Mother Brain killed my babyyy!!!

2.

-Where is Margie?

-She's at the library again. In the basement.

-She's such a Mother Brain!

by Mama Brain's boy May 30, 2011

Boner brain

when one has the inability to speak or function because all of the blood has rushed out of their head to their boner. generally makes the affected person very stupid for the duration of the boner. mainly occurs to men with large schlongs.

"she told me i could touche her boobs and i wigged out, i think i said 'i don't need to.' I NEEDED TO."

"Total boner brain dude, ouch."

by twiceonsundays November 16, 2011

vampire brain

1. (noun) a type of brain which functions best when the Sun is out

2. -ed (verb) to have planned or thought of at night time ONLY.

3. -ed (adj) a person who has vampire brain; a person who functions best at night; a person whose brain shuts down when the suns comes out; a genius at night

Examples:

Don't talk to Harry in the morning, you won't get any good ideas from him. He has a vampire brain.

"That movie was soooo awesome! I heard it was vampire brained."

The vampire brained girl panicked. She was running out of time, the sun was about to rise and her article wasn't finished yet.

by SlightlyBipolar August 13, 2011

boy brain

not thinking beyond your dick or your stomach about the impact of your actions on other people

my boyfriend doesn't realize it's our anniversary today. he is suffering from boy brain.

by truthbombdropper March 18, 2014

Boner-Brain

When ones intelligence level decreases as blood flow levels lower in brain to accommodate the needed increased flow to the penis during a erection.

I can't do math right now, I totally have boner-brain.

by JDiddy2Pretty November 11, 2015

Pregnancy brain

When your math teacher can’t teach no more

I searched for my keys in the refrigerator, must be my pregnancy brain

by Penisluver27 May 11, 2018