As the Christmas carol, "Santa Claus Is Coming To Town," the lyric "Santa knows if you've been naughty or nice," comes to mind when you have a look at this sign. One of the things parents tell children is that if they are naughty, they will end up with a lump of coal in their stocking instead of gifts. Nobody wants a lump of coal, but they also probably don't want a reindeer and Santa hanging around them in the way this sign implies.
Santa will stop for good boys and girls, nobody needs a sign to ask for this. This is just plain creepy.