In 2007, 46-year-old Jacqui Gray was one of many contestants in the fourth season of The X Factor. Like most talent show contestants, she had little in the way of actual talent. After smirking throughout her entire performance, Cowell asked Gray the patronizing question, "You have a very weird sounding voice, are you aware of that?" Both he and fellow judge Sharon Osborne suggested that she see a throat specialist, saying that it sounded like "somebody else is in there".
Displaying what has to be the world's least attuned sarcasm detector, Gray decided to take the advice of the judges and see a throat specialist.
What the doctor found was quite surprising. As are the other stories in this list at Cracked. Link