The stalwart zombie-road-sign prank recently befuddled drivers outside of St. John's, Canada. Anonymous pranksters set it up to inform unwitting Newfoundlanders/Labradorians of a necrotic outbreak. Walking dead and those darn space rays, griefing the roadways of North America.
I'm particularly fond of the EXPECT APOCALYPTIC DOOM! message. That alone would be enough to raise my hackles in sheer confusion/existential despair.
[Via CBC News. Hat tip to Mike!]