Well, this really isn't a question or anything, but one of the locked Forum threads(who taught Kakashi) said something about how the Sannins(except Jiraiya) have techniques to avoid death/look young. Orochimaru using his jutsu to swap to a new body and Tsunade using a henge to disguise her age.

Anyway, I just wanted to mention that in Japanese mythology, the Gama-Sennin(toad master) is thought to be a sage/monk who possesses the secret to immortality. So, maybe Jiraiya's holding out on everybody? [img]i/expressions/face-icon-small-tongue.gif[/img]

If he does know it, it's probably gonna be something like "staying young at heart will keep you youthful forever." [img]i/expressions/face-icon-small-tongue.gif[/img]