If more than one of these things is observed, it is more than 75 percent likely that you have an American on your hands:
1.) They talk…loudly and with body motions on public transportation
2.) They smile at everyone they pass
3.) They are wearing sneakers (or trainers for my British readers), backpacks, outdoor gear, baseball caps, polar fleece jackets or sweatshirts
4.) They are not afraid of color. In a city where black equals chic, bold colors and prints stand out…in the loveliest of ways.
5.) They travel in groups and huddle together before a restaurant choice is made.