It is where two people are bonded together for a long time (to make them know each other like brothers) to fight for a higher ranking soldier.
The bond brothers wanted their leader back, so they lead an assault on the enemy's base to free their leader.
by Fatetech September 25, 2015
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two brothers that have bonded sexually hence the name

they can do so by having anal sex with each other

one can achieve this by fetus fish their brother from there mothers vagina
sexually bonded brothers
by rising dragon December 16, 2010
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