Derived from the term brother fucker; one who has sex with her biological brother. Often regarded as myth, there are documented cases, particularly common in Louisiana. The cause of this behavior may be linked to such deep-rooted narcissism that one only sexually desires their perceived genetic equal.
Barista: Liz Landry, the manager, yeah she's a brofo.
Customer: She fucks her own brother?!
Barista: Yeah.
Customer: You mean, like her step-brother, right?
Barista: No. Her brother.
Customer: The balding douche that just dropped her off flowers?
Barista: Who, Jason? Yeah. They share a pillow.
by we all knew September 24, 2007
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a bro who is a fo, mofo
by S.E.A.N January 6, 2007
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Like a mofo, but with a brother!
Nicole is such a brofo!
by Emmmmmm March 6, 2004
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Someone who is a pal, but also an enemy: For example, an aquaintance on a rival sports team. Can also be used to describe someone who is usually a better freind when he does something antagonistic. Not to be confused with brofo which is entirely different.
Don't get too friendly with their quarterback - at best, you're just brofoes.

Why'd you rat me out man? Sometimes you can be such a brofoe!
by Sethybanjo November 27, 2009
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A sibling, or even a male who used to be a friend, who you no longer get along with.
BroFoe used to be my best friend but he stole from me and now I can't stand him.
by Lori WordSmith December 27, 2011
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Two male friends that screw each others mothers. Shortened of Brotherfathers.
"You guys really do each other's mom a lot. Are you neighbours or something?"

"They're brofos."
by foryth December 11, 2012
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