When something is schlang, it represents itself because it is what it is. No advertising, no pushing, no selling, no looking for it. It just does what it says on the tin. It's there because it can be. Doesn't need to be sold: it sells itself because it is just there. Schlang.
I'm Schlang. Nobody notices me and nobody passes me by. They see me and know that I'm here because I am. I'm Schlang.