ninja

To do something slyly or discreetly; to act in a secret manner.

Dood 1: "Dood, did you see Bob jack that old lady's purse?"
Dood 2: "Yeah, dood, Bob is sooo ninja."

"Dude. Next time, try to be ninja when you steal a cookie from the cookie jar. Jeez.."

by MJ is cool. August 08, 2009