A holiday message

I thought perhaps I had hallucinated this billboard when I saw it last weekend, caught without my camera, and I despaired for my sanity when several attempts to view it during the week presented me with no such public-spirited reminder. But yesterday afternoon, there it was again, tucked in among the countdown to Christmas and ads for a nightclub — a special request from Lamar for drivers along I-787 to stop picking their noses.