Green’s Dictionary of Slang

1. (Aus. prison) a homosexual.

1990

Tupper & Wortley Aus. Prison Sl. Gloss. 🌐 Sky rocket. 1. Homosexual.

2. (N.Z. prison) a hypodermic syringe [play on ‘shoot up’/shoot up v.² (1)].

2001

D. Looser Boobslang [U. Canterbury D.Phil. thesis] 169/1: sky rocket n. 2 a hypodermic syringe.