Joan Rivers has sadly passed, but when she was alive, a death hoax was part of her final years. In 2011, there was an online rumor that Rivers had passed, which a lot of people believed because of her age.
Huffington Post then contacted her and she confirmed that she was still kicking. Characteristically, she said that she did great in an Ottowa comedy show and joked that Betty White probably started the hoax. Thankfully, she still had some time left.