Ahem, Matey, i be far older than 12 years old!
Just think of this logicly: A ninja becomes a pirate and raids ships. Or a Pirate somehow gets Ninja skills.
Could it happen?
Who do you think would emerge victorious in a fight: A dozen Pirates, or A Dozen Ninjas?
And another thing: Do you think a "Pirate Ninja" Exists? None of my mates Thinks so!
Onward, Professer Hootington!