Green’s Dictionary of Slang

goolie adj.

(Polari)

black.

[UK]P. Baker Fabulosa 293/1: goolie black.

In compounds

goolie bog (n.)

(N.Z. gay) a public lavatory where the light fightings had been removed or destroyed.

[NZ]W. Ings ‘Trolling the Beat to Working the Soob’ in Int’l Jrnl Lexicog. 23:1 64: In avoiding the attentions of a charpering omi (policeman) he might often frequent a [...] goolie bog (one that had been vandalised to remove light fittings.