I'm no psychologist, but I'm guessing that this guy is compensating for being real ugly, perhaps even fugly:

"Johnston, a biopsychologist at New Mexico State University, takes evident pleasure in pointing out that if you were a dung beetle, dung would taste like sugar on your tongue. “Sugar is a molecule, and we have evolved a brain to generate a positive response for its taste.” The same, he says, goes for our perception of beauty—a perfect smile, an ample bosom, a muscular bicep. All, basically, dung."