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A person who joined the Marching Band in the same year as you did.
Jeremy, and I were Freshmen in the Band in the same year at Southern University. We've went through tough times of hard training to be upper classmen the following year in the band, and we're treated as we grew up in the same household, so that makes him my Crab Brother.
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A term used to Describe to gentlemen who have been either in a relationship or had a sexual encounter with the same girl
How do you know david?

- me and him are crab brothers to Emily woods!
by Lee Harvey alwaysbald August 05, 2017
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