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1.
Carpet Ninja, be definition can be used in any sentence where no other word will suffice. It is intended to stun and confuse the other conversationalist toward whom it is directed.

The word is derived from a mixture of the phrase "carpet muncher" and ninja (master of the dark arts)
Stop being a Carpet Ninja!
by Yatez October 17, 2007
 
2.
Ninjas that hide in carpets, only slightly less prolific than other household pests, but way more deadly.
Always routinely check your carpets for carpet ninjas.
by Abe Froman, Sausage King September 15, 2010