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1.
Verb. Meaning to have a part in a fight in the direction that the primary fighter is facing, or also to mean a person will accompany another in a stupid or foolish act.
"If Jerry swings on me, will you be there?" "Yeah, I got your back" or "I'm going to go drink a fifth tonight, wanna go?" "Sure man I got your back"
by That one army guy September 30, 2013