my brother in Christ noun1 •(Internet) A (sometimes condescending) term of address, used before a statement which intends to dispel someone's lack of self-awareness.I know you're really hyped about the plan, but, my brother in Christ, it's not gonna work.Tech bros sometimes say they're against so-called social engineering; my brother in Christ, your technological innovations have been a chief wellspring of such reengineering. formsmy brothers in Christ