I usually don't like using the term "facepalm," because it makes me feel like I'm conforming to internet lingo. But, in some cases I believe it's a good description of what I want to do when I notice things like this:
Driving around in Johnson City, TN, I saw a large building. It was a gun store named "Gunners." Slapped on the side of the building was a huge poster that said "Jesus is Lord." Right next to the store was a billboard advertising Beer and NASCAR.
To make this a game, post your "facepalm heard around the world."