You will never see a ninja, never have seen a ninja, and never will see a ninja. IF you thought you saw a ninja you didn't. The ONLY time you will ever see a ninja is right before they kill you(if your lucky enough to spot them)
1. Ninja fight ALL the time.
2. Ninja like to keep kittens purring by rubbing their cute little bellies. See the Proof! If you see a kitten purring for no reason, there is undoubtedly an unseen ninja rubbing its belly.
3. Ninja are silent but deadly.
4. Ninja can have sex with themselves, even if their eyes are closed.
5. All ninja can wail on an electric guitar. However, they generally choose not to, as this tends to alert people to their presence.
6. Ninja and pirates do NOT get along.
7. Ninja don't wear headbands with the word "Ninja" printed on them. Proof!
8. Ninja are responsible for the majority of deaths in the world. You, yourself are likely dead from a ninja attack, however it probably happened quick enough that you didn't notice, so you will continue living your "life" (as you believe it to be) until you are convinced you are actually dead.
Pwnage for the Pirates.
I don't have anymore 
As you can see there are too much ninjas and ninja fans. You can't get rum for all of them. Phbbbtt! . Ha! Beat this!