Doing a lot of things that require your brain.
Tomorrow has to be all business. 10am office hours for chemistry, then study 3 chapters of psychology. I’m going to be so brained out.
by dramastace May 03, 2016
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When a man fucks a woman so good she orgasms multiple times, trembles/shakes uncontrollably, is unable to speak properly and needs to sleep afterwords to recover.
Ted: Fucked me girlfriend last night good and proper, she couldn't speak properly afterwords.

Bob: Thats because you fucked her brains out man.

Ted: Fucking right i did!
by Retro-Cat February 29, 2016
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To fuck for a long period of time..... Quickly. As in thrusting fast for hours. To make both man and woman climax multiple times in an hour. To make a head imprint or dent in a headboard.
A fun weekend, to Fuck your Brains out with sarah!!
by Sarahjinkens October 22, 2010
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to have sex uncontrollably
i really want you to screw my brains out
by plackrite December 20, 2013
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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
by Busted cooter April 27, 2020
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