A bro, not just any bro, the realist fucking bro there is. Literally just supplement it for anytime you would say brother, or bro, but only when you truly mean it.
See that dudeover there? He’s had my back since day 1, my scrother since the beginning.
When someone finally drops the final straw that breaks the camel's back and you do every conceivable action within your means to destroy that person's life in its entirety, short of killing them.