The company and the union are engaged in a 'war of nerves', with each side threatening the other.
Something she said to him must have 'hit/struck/touched a nerve'. I've never seen him so angry.
“After making the mess, he didn't even offer to help clean it up.” “What (a) 'nerve'!”
(..) Thanks. Are you talking about that little girl... that got murdered? I doubt it was a drug problem. It was probably a nerve problem. I could recheck the arm for injuries, but l'd have to take the body back to Portland... to do some real nerve work. (..)1992 Twin Peaks: Fire Walk with Me