Seriously. Why does the cheese stand alone?

I know I’m woefully behind on substantive posts– I promise they are coming– but this question has been vexing me for some time now. And, since I spent much of today singing along to Sesame Street kids songs with my 6 month old (and Big Bird conveniently edits the lyrics of the Farmer in the Dell from “The Cheese Stands Alone” to “The rest is up to you”), I’ve become critically concerned about this.

In fact, Wikipedia has no answer. The section on the page about questions–why the cheese stands alone, that’s me, I did that.