Zumba? WTF?

After I sharedHow strange is it that I am now a certified Zumba instructor?on Facebook, a friend said, "I might think it was strange if I had any idea what it meant." Another responded, "So, you teach them how to navigate around the furniture while they vacuum?" Which made me realize the world is divided between people who have heard of Zumba—15 million are currently taking Zumba classes,