Frisk is Australian Police code and also Australian slang for either a undercover police officer or someone who is a police informant or someone who is happy to just feed police information about criminal activity.
Police Officer:"have you got confirmation from our frisk ?"
"Be carefulI heard James has turned frisk stay away from that frisk"
Frisk is well known to be a person who touches kids predominantly boys they are known to do this because they are born with very small penis and because of this they are a dud root and females can't stand to fuck them so they end up becoming frisks