Green’s Dictionary of Slang

curly-mo n.

[supposed resemblance to a bushy moustache]

(N.Z. prison) a large cannbis cigarette.

[NZ]D. Looser Boobslang [U. Canterbury D.Phil. thesis] 50/2: curly mo n. a big, fat marijuana joint: ‘Make us a decent joint; go for a curly mo’.