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From "Ask A Ninja."

When you get some awesome ninja street cred for doing something ninjatastic. Its also a very painful drink that tastes like a punch in the face.
I got some some rad Ninjuice by killing a flaming Minataur with three heads.


Ninja 1:" Eww! Thats some bad ass Ninjuice!"
Ninja 2:" Dude, thats orange juice and minty mouthwash."
by Secret Justin May 18, 2007
When you earn some street cred as a 90s style Ninja fighting a minotaur in a flannel shirt.

Also a very painful beverage that tastes like a punch to the face.
Make sure you don't get the ninjuice, it will knock you out.
by Mark SF May 19, 2007