Reminds me of my post on LinkedIn:

The land of Smile
In Thailand everyone greets you with a smile. People in the streets, young and old, man or woman, everyone. Who is wrong? Them or us for not smiling meaninglessly? Would it make a difference riding the train to work among all grumpy people or among people who will grant you a smile on each eye contact?
Is this really limited to just one country in the entire world? And if so, don't you agree we should change it.
Wake up, today is "Smile-Meaninglessly-At-Everyone-Day" !