The most sacred thing a bro could give to another bro, or receive from a sexy slam piece. When a bro gives Brah-gina to another bro it means that he is giving his bro full permission to get it in with his kitchen sweeping bitch, or mom.
Colin, it'd be tubular if you'd give me your mom's brah-gina for my birthday.
by Theguywhogetsgoodvagina January 19, 2011
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