The girls in Vancouver have the right idea
http://www.canada.com/nationalpost/news/story.html?id=52553a6f-37d2-4d11-b730-4b42ab9034c2
http://www.canada.com/nationalpost/news/story.html?id=52553a6f-37d2-4d11-b730-4b42ab9034c2

