Ninja Secret

A secret that not even the secret keeper or teller knows.
No one knows so its a ninja secret.

Person 1 " so hows life"

Person 2 " its a secret"

Person 1 " you can tell me your secret"

Person 2" its a ninja secret"

Person 1 " what?!"

Person 2 " I dont even know the secret, there for its a ninja secret"