Articles VIDEO: Hidden Camera Proves Laughter is Contagious Laugh, and the world laughs with you. Even if they're total strangers who happen to be standing on the same tram platform as you...Pete(r) Karinen06.07.13 [youtube]http://www.youtube.com/watch?v=Wk9-gkT2bI8 Laugh, and the world laughs with you. Even if they're total strangers who happen to be standing on the same tram platform as you...
