The coffee you order can mirror your personality. An observational study of coffee drinkers showed that people who drink black coffee were more likely to be patient, stubborn purists, while those who add cream and sugar were more generous and comfort-seeking. Iced coffee drinkers tended to be spontaneous, childlike trendsetters, decaf drinkers presented as obsessive, health-conscious control freaks, and most of the instant coffee drinkers were laid-back procrastinators. Source Source 2