What is Scream It Out Your Back?
1.
Similar to "blow it out your ass" or "tell somebody who cares"; to put a spin on it. Something to say if someone is jabbering in your ear for any reason and you don't care at all.
"so then i told her 'i'm done, i cant deal with this anymore, find someone who really loves..."
"STOP. shut up. I don't care. Scream it out your back, man."
See