or dead nuts on, adv. phr. (common).Originally, having some cause of complaint or quarrel; also, very fond of; having complete mastery over; sure hand at. Cf., DEATH ON, DERRY ON and DOWN ON, all of which are variants.See also NUTS ON, an older form.
1877. W. H. THOMSON, Five Years Penal Servitude, iv. 288. Davies was DEAD NUTS upon cutting mens hair. The whole evening long was he calling men out to be operated upon.