A person with little experience, background or training who suddenly starts to enjoy high-brow, high-margin items of questionable quality. Includes people who buy artwork on cruise ships, $10,000 home theatre systems and Hummers. They also drink wines costing $50+ per bottle without ever drinking the $10+ ones and buy athletic gear engineered for professional athletes for a half-mile stroll. While they profess their love of the "finer things in life," a merchant laughs all the way to the bank.
Dave is such a connoissucker. He bought that painting on a Royal Caribbean cruise for $2500 and acts like it's a Van Gogh.