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

bang my brains out

To be Fucked very hard! usually if your brains are being banged out, you have about 2-3 orgasms.

a girl: OMG Josh said he's gonna bang my brains out!!
the girls friend: are you going to let him?
the girl: hell yeah!! lol

by b-r-i-a 54 September 8, 2007

plunge-your-brains-out

Gambling every last nickel, til there's none left

Fat Rich is sick -- he went to the track and plunged-his-brains-out. I had to lend him bus fare home, then he was back the next day. He found another thousand somewhere, maybe under the mattress.

by Golf maven June 3, 2005

shit your brains out

To shit so hard you feel as though your vital organs have shifted and you're not sure if something you needed blasted out.

During Patrick's trip to Mexico, he drank the water and shit your brains out.

by Comic83 July 6, 2015

Pussied Your Brain Out

Verb.
Overthinking, to the point where it causes you to psych yourself out.

Michael: “I can’t do it, what if I break my leg, or what if I hit my head?!??!”.
Angelo: “ dude, you pussied your brain out”.

by pomegranate osmanthus March 11, 2021

Fuck your brains out

One of the best orgasmic sexual experiences you will have with the opposite sex it’s hardcore and savage riding and thrusting and humping making each other’s head go back again and again like wild animals the best kind of sex

(Whispers in her ear)
I will fuck your brains out

by Miao tai chi April 27, 2020

puking your brains out

A slang phrase referring to nausea of such extreme intensity that the physical act of vomiting "feels" comparable to expelling the contents of your viscera or gray matter (brain).

If you drink too much alcohol, you'll be "puking your brains out" in front of everyone.

by David in California October 24, 2006