What is Brotherfucker?
1.
A girl who fucks brothers especially her friends brothers. Like a motherfucker but instead a brotherfucker. The girl will usually still be in high school or senior school and her friends brother is usually a few years into their university course.
Man. I can't believe she slept with your brother last night. What a brotherfucker.
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2.
Strictly, one who engages in a specific type of sibling incest. Usually applied to any contemptible individual or object, regardless of their or its sexual proclivities.
Often shortened to brother, brofo, or bro.
See also
Hey, brother, can you spare a dime?
My mobo is a brofo.
Leave off my bro, man.
3.
when a man gets accused of wanting a threesome with a female and her brother and then furthermore is accused of just wanting her brother
girl: so ur a huge cock tease....and u wanna fuck a guy.....
annnd you told my brother you would visit him without me
you are so fucked in the head to do this to me.
man: no i am not a brotherfucker
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