Green’s Dictionary of Slang

bollicky adj.

[ballock n.]

(Aus.) naked.

[Aus] ‘Whisper All Aussie Dict.’ in Kings Cross Whisper (Sydney) xxxii 7/1: bollicky: To be in the bollicky is to be completely nude.
[Aus]F.J. Hardy Outcasts of Foolgarah (1975) 23: He had turned the shower off and came out bollicky.