I'm starting my morning with a nice mug full of steaming hot deliciousness (i.e. coffee) and I realize that this is my second cup of coffee. Or is it? And I suddenly pondered, when someone says they have two cups of coffee, do they mean two mugs or the measurement of two cups? Because I make four cups worth, but it fits in two and a half mug-fuls. So when someone says "cups" now, I immediately ask myself in my head which one they mean. And I decided this was a worthy blog topic. Drink on, fellow coffee lovers!