– You’ll now jump into water, my swimming trainer says casually.

– Non! I say.

– Si!

– Non.

– Si.

– Non.

Then I notice a senior citizen looking and smiling at me:

– What is he smiling at?

– He is waiting for you to jump.

– Well, we just found his youth elixir. He will have to wait until he is at least 100 years old.