This week while dining at a McDonald’s in South Burlington, Vermont, I went to the men's room — and for a split second thought I’d entered a wormhole to the 1990s.Did you ever go to a dance club that was illuminated by black-light bulbs? You know, the ones that glow purple-blue and make dirt and dandruff stand out like Christmas tree lights on your shirt?My business partner and I were thrown out of a popular chain music supply store by three sto…