A sexual act. Performing a Double Penetration with a relative or a close friend while the female is on her period
Dude, me and Jake became Blood Brothers last night. Jess is such a nasty slut...
by Cubsbball25 May 29, 2019
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When two or more guys fuck the same female during that time of the month or

The term for the collection of men who have shared the same bloodly vagina
by Meekis36 November 11, 2020
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A straight man who goes out and/or secretly has sex with men behind their girlfriends/wives back
My lax bro Kevis such an undercover brother, he stops by gay bars every night to hook up with dudes behind his girlfriend s back.
by lil leroy October 24, 2022
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what you are with one or multiple of your friends after the act of nutting in a cup after, before or at the same time of your friend or friend’s then mixing it splitting it into even portions and taking it like it’s a shot of vodka
JJ says “We are all officially Nut Brothers”

Everyone cheers “Yes we are”
by MonkeTucher616 June 25, 2024
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A younger man who hates on his people
John your being a real brother ruckus always hating on our brotha Jimmy’s ideas.
by Shivguy4u March 30, 2021
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Worse than every fathomable insult that a man can tolerate, every time this is said, a curse haunts your family for years, and any and all brothers immediate die of cardiac arrest
Carl: ur mom gay
Steve: Your grandpap a trap

Carl: Don’t make me do this Steve

Steve: I bet you won’t , do it pussy
Carl: your brother a man lover
Steve: immediately implodes, brothers die of severe heart attacks, family rejoices, any man born for the next 20 years dies at age 1. There are no survivors.
by GhostIsGay March 21, 2018
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