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An eternally binding act of hooking middle fingers together in an attempt to seal the deal of a promise that has been made.

If one breaks the rules of the brotherswear, it will result in a swift kick to the testicles.
" YO DAWG THE FIVE-O ARE PARKED OUTSIDE "

" SHEEIT SON, BROTHER SWEAR ? "
by OG-PIMP-HUSTLA April 11, 2010
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