Solving riddle before fuck-a-thon

Eva Murkovski cravings of traveling the world, but she needs to learn geography flawlessly for that. Unluckily, the sweetie faces some problems memorizing the postures of the countries on the globe. So, she takes a few intimate lessons, but she still fails to learn everything needed to become a lucky traveler. Eva Murkovski can't even memorize the pose of Germany. She keeps pointing only at countries that are colored pinkish. The instructor perceives puzzled at very first, but then he notices the color of her undies and bods the riddle out.