"To have someone's back" is a common idiom meaning to support or defend someone, especially in a challenging situation. It implies a willingness to be there for someone, offering protection and standing by their side.
eg. "We got your back" implies a promise of loyalty and assistance, suggesting that you can rely on the speaker to be there for you when you need it most.
The idiom originated from the idea of mutual protection in combat, specifically from the practice of fighters standing back-to-back to defend each other from attacks from any direction. It evolved to mean offering support, loyalty, and protection in various situations, not just physical ones.
- From dear Google
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I was born very shy and quiet, and would feel scared and crying when others talked loudly around me.
But growing up with boys, I learned boys' games: 打弹弓，扇三角，climbing up trees, jumping over walls, fake fight, etc. (but never was good at any 
). Being a big sister at home, I needed to protect my brothers when we were young. I never swear and couldn't fight, but used my body to shield them from bad kids' fists.
That extended to friends at schools. I still remember at high school time, me and another girl always walked together to and from the school, to prevent "stalking" from boys (ok, we apologized to the "boys" years later 
).
I bet you all have been there done that: to have someone's back and have been covered back.
Cheers my friends!
