Nobody tell

The less "serious" a topic is, the more "serious" the writing style should be? Or is that how those horridly pretentious bits of cultural history are created? I think so. The best way to admit that you realize the potential criticisms of the validity of your topic is to address it tongue planted firmly in cheek. The more serious you sound about things like tomato sauce ads or The Wizard of Oz as lesbian fantasy, the less credible or believable you are. If you write as if there is an inside joke between you and your reader, there will be an inside joke and a connection with that reader.
Now, if only there were such a thing as "just the facts", we'd be all set.