Everyone from Rick Astley to Justin Bieber has had to deal with the bizarre celebrity death rumor, but Bill Cosby seems to constantly be dealing with false rumors of his demise. Monday was the fourth time the comic has been erroneously reported dead: “Bill Cosby died†was the top trending topic on Twitter for most of the day and “is Bill Cosby dead†was the second-most searched for query on Google Monday afternoon. Cosby was forced to take to his twitter account Monday afternoon to shut down the rumor… which he followed with a plug for his iPhone app. [CNN]