Daydreaming, the art of staring out the window while pretending to be interested in the world outside. A lost science that has been forgotten in the age of instant gratification.
Step one: Find a comfortable position, preferably with your eyes slightly ajar and your mind slightly elsewhere.
Step two: Stare out the window for an extended period, preferably until your neck gets tired.
Step three: Let your mind wander into the realm of possibility and probability, where anything can happen.
Step four: Pretend you're interested in whatever you're seeing outside the window, while secretly daydreaming about your favorite food.