General Zod
TGT Addict
I'll generally (and without volunteering that there are proper, legal signs out there) say something to them like "You know that sign only affects people who aren't out to break the law, right? Someone wants to do harm they're gonna ignore it."
Generally it'll either get a blank look, or the dawning of realization that the sign is stupid.
Generally it'll either get a blank look, or the dawning of realization that the sign is stupid.