A unicorn is an imaginary animal that looks like a horse. It has one straight horn growing from the middle of its head. It is a magical beast, and thought to have special powers. But does a unicorn drink coffee? If you ask the American coffee company Starbucks, the answer is yes. But not just any coffee. Beginning this week, Starbucks customers will see a “Unicorn Frappuccino” drink on the menu. A “Frappuccino” or “Frap” for short -- is a kind of mixed Starbucks coffee drink that is served cold. The Unicorn Frap will be on menus for five days. So, what is it? It is what a unicorn probably would order if it walked into a Starbucks, of course. It is very colorful, and looks and tastes nothing like coffee.