Life of a Ninja

I am a ninja
This is a fact
Wouldn't have killed ya
If you hadn't attacked

Never go searching
For someone to kill
I will wait perching
On a window sill

I'm a killer for hire
I get a lot of money
Sitting on a spire
I can spot a bunny

I'll throw shurikens
Or slit your throat
I don't like the Puritans
I'm quiet like a stoat

I can sneak around town
Without being seen
I'll take you down
But I'm not that mean

So when you are out
Look around
But don't give a shout
When you hit the ground

Dressed in black
In the dead of night
A duck goes quack
And then takes flight

It doesn't matter
If you look back
Cause I'm just a smatter
On a canvas of black

Speaking of paint
I like to do it
You might even faint
If you try to look through it

But now I am done
Describing myself
I thought it was fun
Like climbing up shelves