The Center for Disease Control, unlike many large organizations, has a sense of humor. If you are concerned about a zombie apocalypse here is the official U.S. federal government response.
Also, diverse responses on zombie protection on Quora.
I would add what I saw on the Shiloh Church marquee sign. No joke, they are always bizarre.
“Zombies don’t eat fast food.” (An upcoming series on this).
Both the CDC and Shiloh have realized the power of a disconnected message method as has Geico. Obviously, this works very well through social media platforms. While it shouldn’t be core to your efforts, showing a sense of humor or even mild shock can be effective to drawing initial attention to your offerings. Of course, it can backfire. Many of us have seen a commercial where we saw a humorous, disconnected message and, afterwards, if asked we could not tell you the product or service promoted.