Since it would in all likelihood be a felony here in KY, depending on various factors (cuffs, who was with me, who was with him, etc.), I might take action there and then. In all likelihood, I'd say no thanks and then call dispatch while watching him from a discreet distance. This would be the only thing I would do if I were not carrying a firearm.
"If you're not a liberal when you're 25, you have no heart. If you're not a conservative by the time you're 35, you have no brain."- Unknown (NO...it wasn't Winston Churchill!)