This past Sunday Barney & Clyde had another great strip that depended on meta humor. The foundation of the joke -- Van Morrison's contractual obligation songs -- was certainly real enough. Although they're no longer so easy to find online. All of the sites I checked had the content removed or blocked (like WFMU's Beware the Blog entry).
As I noted in "Meta Barney & Clyde," the characters are aware they exist in a comic strip when it serves the story. And that's exactly what happens here.
What I really like is the double purpose of panels 5 and 7. They serve the traditional function of adding a beat before the next line. But once you get to the last panel, you realize they also serve as filler.
Impromptu genius? No, just some well thought-out humor that plays with the medium.