Jobs played off the famous Mark Twain quote in referring to obituary preparedness on him that was accidentally posted by Bloomberg News and then retracted. News outlets regularly prepare obituary material on famous people.
Questions about Jobs' health swirled after he appeared gaunt at a recent Apple event. Apple has since said Jobs, 53, a survivor of pancreatic cancer, suffered from a bug and is better.
He appeared thin but energetic as he detailed changes in Apple's lineup of iPods and the iTunes music service.