With the way today's lifestyle is, it seems that a lot of people are too afraid or "busy" to stop and have a little fun.
Just do something ridiculous and laugh yourself silly. It's said that laughter is the best cure.
This guy set up a swimming pool on a busy street and stopped random people asking them to stop and have a little fun.
Lesson in this, don't get too consumed and bogged down with work and daily stresses, take a little time out for you to have a little fun in life.