Cat has Nine Tails

‎::How to Prove Cat has 9 Tails::

No cat has 8 tails, and 1 cat has 1 more tail than no cat.
If no cat has 8 tails and a cat has 1 more tail than no cat.
One Cat has 9 tails.

You should laugh when you figure this one out.
Eye roll is not an appropriate gesture.