Mouths were watering -- or perhaps it was just drool -- at 7th and Montana this morning as word spread that Our Favorite Starbucks was offering free samples of its all-new Lemon Blueberry Muffin. As far as pastries go, the Lemon Blueberry Muffin is pretty standard fare: A hint of Blueberry and a pinch of Lemon, topped with Ubiquitous Starbucks Glaze. But appearances can be deceiving. Rumor has that long-term exposure to the Glaze turns people's brains to mush. Just ask Barista Robb, who seemed more glazed over than the muffins this morning. "What's this?," he asked me, absent-mindedly pointing to a cup of coffee on the counter. "I don't know," I replied, "Maybe it's my coffee?" "Oh yes," he answered, "I just poured that for you a couple of minutes ago." Ladies and Gentlemen, I rest my case ...!