:-) @ Tokyo
This is a part of a price list at McDonald. If you know Japanese language and look at the lower right of the photo, you think that the list is very strange!! At the lower right reads "Smile 0 yen, or for free". When you order "smile", clerks will give you smiles:-) (though I have not seen someone ordering smile yet...) If you are in Tokyo for travel and tired or get homesick, why don't you order "smile" for relaxing?
Have a smiling day!!