i Register
In some senses, brotherfucker is marked as vulgar, literally. Watch for register when choosing this word.
noun
Motherfucker (generic term of abuse).
This hurts like a brotherfucker!
One who engages in incestuous sex with their brother.
1963, Robert E. L. Masters, Patterns of Incest, p 269
A homosexual man.
Here in N tank was a pretty slim boy lover, the little brotherfucker telling tender tales of lusty sucking twelve-year boys, pants down on the sofa, […]