Buy a Ninja Shirt Here! You never know when the world may need a ninja, and quickly! With a quick flip you will be an instant sneaky hero. The abs are totally up to you though. Here is the before and after. Just a normal every day t-shirt with a simple call to action that says "Ask Me About My Ninja Disguise", then in a fraction of a second (may take a bit of practice), you are now an instant Ninja!