1.
A normal friend will tag you on Facebook.
A friend from California works or knows someone who works at Facebook.
2.
A normal friend will invite you to workout at the gym together.
A friend from California will invite you to go on a 10-mile hike together.
3.
A normal friend will invite you to a BBQ with the usual hot dog and hamburger set-up.
A friend from California will invite you to a BBQ with tofu hot dogs and veggie hamburgers options.