lily law
What does lily law mean?
The police, dressed up in a camp feminine alias. Polari loved to feminise authority into harmless-sounding women — Lily Law, Betty Bracelets (handcuffs), Jennifer Justice. Naming the thing that could arrest you for who you were, and naming it as a fussy lady, was both a warning system and a small act of defiance. You'd hiss 'Lily Law' to clear the room.
Origin
Polari, the secret language of British gay men, used when same-sex activity was criminalised in the UK. One of a set of feminised police nicknames alongside Betty Bracelets and Jennifer Justice — coded warnings disguised as gossip about women.