i got your back 

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"

i got your back by That one army guy September 30, 2013

I got your back 

When in a public restroom, if someone constantly says “I got your back” it means they are looking to sell crack. Other context clues include strange body language such as, scratching or washing same arm over and over, hovering and waiting for response, or actually furnishing said crack.

Hey bro, do you have crack? Oh wait, that’s just a straight up way of asking. No worries I got your back bruh

I got your back by kelrmar1 May 11, 2019

I've got your back

You are going to watch out and be a second set of eyes for someone. You will look out for their best interests and let them know if they have missed something. You will stick up for them.

Dbyrn: Hey, Frappe, I saw some kids messing around near your car, looked like they might be think about breaking in.
Frappe: Dude, seriously?
Dbryn: Yeah, I took some pix of them with my cell phone and they saw me and split really quick.
Frappe: Thanks Dude!
Dbryn: Don't worry, you know I've got your back.

I've got your back by dhax August 7, 2011