(noun) A pants thief. One who steals pants by any means necessary. Rather be with wit, humor, charm or by whipping out his katana, the pants will be surrendered.
"Watch out for that pants ninja, he got my girl pregnant."
by PantsNinja February 9, 2015
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A stealthy, deadly person who sneaks through the night delivering deadly doses of free pants to unsuspecting victims.
Sean was being a free pants ninja last night. What a gaylord.
by roofiecurlz July 6, 2004
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1. Pants that are worn by one or more ninjas.
2. Pants that have incredible ninja powers and qualities. (they can grapple-hook onto the white house without being seen!)
3. Pants that once belonged to a ninja but have been stolen by a secret organization of samurai who hate ninjas and their pants because of their supernessness.
The ninja pants saved the world from the evil samurai socks who eat people's stanky feet sauce.
by waffles!? December 15, 2005
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