Green’s Dictionary of Slang

(N.Z. prison) to perform certain tasks for a skinhead gang while hoping to join them as a full member.

2001

D. Looser Boobslang [U. Canterbury D.Phil. thesis] 145/1: private v. to carry out certain crimes or chores for a skinhead crew while ‘in training’ to become an full member of that crew: ‘He’s privating for those skinheads.