 Right now, 64 and cloudy in Towson. It is sunny and 65 in Pikesville. Today, of course, the day before Independence Day, Americans say the perfect hot dog is grilled. Comes in a white bun, has some combination of these five toppings, ketchup, mustard, relish, onions, and chili. But if we can only have one, it's mustard, not ketchup. Ah!