Clay Aiken thanks Kelly Clarkson for helping him overcome his obsessive refrigerator organization habits, which he likened to that of a "serial killer." Clarkson intervened by rearranging his fridge, causing Aiken to change his behavior. The two former "American Idol" stars have been friends for over 20 years, with Clarkson recalling the incident on her talk show. Aiken humorously acknowledges his past obsession and credits Clarkson for helping him break the habit.