A dummy--sometimes inflatable--placed in a car to deceive enemy agents about the number of persons in the vehicle.

Chicken Feed

Intelligence knowingly provided to an enemy intelligence agency through an agent or a double agent. Such intelligence must be of sufficient quality to convince the enemy agency of its authenticity and, therefore, of the usefulness of continuing to operate the agent. By the same token, however, it must not divulge intelligence that can hurt one's own side.