Ninja Clans
Cults are stupid, espescially ones that worship banannas!
If you are thinking of joining one, join a
Ninja clan instead!
Here is proof that ninjas are classy
Ninja Skills:

Wear black clothes, but dye them red with natural dyes. (It won't show up much because of the material ninja shinobi shozuko's  are made of.
Then when people whack you with swords the blood won't show up because of the tone of the clothing, and they will think you are immortal if they are stupid.

If you want to know the time, simply capture your neigbour's cat and look into it's eyes.
The thinner the eye the nearer to 12 o'clock(Normal time) or 250 o'clock(metric time).
The eyes are thickest around 6 am/pm or
125/375 o'clock.

To find the north, simply cut someone's tree in half with your sword, and whichever place the rings are closest together is north.

Sleep rough without getting attacked by wild animals by climbing a lamp-post, taking your ninja sash/belt off, unwinding it to it's full length (3-4 metres) and tie yourself to the top bit.
(this doesn't work if the wild animal is an eagle)

To scale the wall of your enemy's castle simply kill a wild animal, and jam its claws into weak spots in the masonry, using them as handholds.

To hide in the top corner of your enemy's secret base just put on your Tabi boots, arch your back against the ceiling, place your hands open palm on each wall and push sideways, pushing down with your heels at the same time.

A bigger bit of proof.
Ninja in camoflage suit
Ninja uses chains to his advantage
Ninjas are masters of disguise
I'm guessing this was faked
Ninja pictures:
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