G.I. joe or G.I.jane
a person who will say anything about you even if they’re still there and can hear your whole conversation.
My coworker is a G. I. Joe. He told my boss I was a disaster just because I spilled coffee.
My friend is a G. I. Jane. She told my crush I was a mess just because I didn’t text him first.
My neighbor is a G. I. Joe. He told my mom I was a failure just because I forgot to do my homework.