10. Justin Bieber's Cancer

After a fake tweet by Entertainment Tonight (and subsequent ones by Kanye West and Chris Brown) stating that Justin Bieber was diagnosed with cancer, his fans started shaving their heads and tweeting pictures with the hashtag #baldforbieber. That prompted Internet memes asking Justin Bieber to shave his head, some doing the Photoshop work for him. Others called him a troll, but lets be honest, Justin would never fake out his fans like that.