This way to the bathroom?

The red arrows point the way to this restaurant's bathroom. Or, do they?

If you look closely, three things are evident. First, the grown man really, really, has to urinate. Second, everyone observing the protagonist is laughing at him. And, third, there is a young boy urinating on the wall.

So, what is this restaurant's message? Is it "this way to the bathroom," or is it "just use the wall?"