In that episode of Law & Order, the evil priest told the detectives that peccavisti meant "I have sinned." It's a lie, of course; "I have sinned" is peccavi, peccavisti means "you have sinned."
A busyLondon thoroughfare where local-area delinquents with misdemeanor criminal-records are made to stand on the sidewalks and face traffic with placards detailing what their offenses were (i.e., "I tell lies", "I like to shoplift", "I express myself through graffiti", etc.) as a condition of their parole/release.
I dunno how effective a crime-deterrent it is for someone to stand shame-duty on Peccadillo Circus, but I keep seeing those infamous and similarly-publicly-embarrassing "humiliation-boards" displaying rubber checks that are located near the entrances of convenience stores, and most of said worthless financial instruments seem to just stay there for years, without their writers' appearing to care very much about all the bad publicity generated by same.
Da minor offense of displaying a rubber "guy junk" toy while strolling about in public.
It's not a particularly wise action to carry sex-toys about with you when running errands, anyway, but if you feel dat you must do so, at least make sure they're well-concealed inside your clothing or a handbag, so as to hopefully avoid accidentally committing any embarrassing peccadildos!