Green’s Dictionary of Slang

mirror man n.

[he is always going to ‘look into it’.]

(Aus. prison) an officer who promises help, advice, information etc, but never manages to provide it.

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[Aus]Tupper & Wortley Aus. Prison Sl. Gloss. 🌐 Mirror man. Any prison officer renowned for promising ‘to look into it’ but doing nothing in the event.