Several adverts exist in four independent worlds: the world of the sender; the fictional world of the characters; the world of the receiver; and the real world of the receiver. Therefore, the goal of the sender is to push the product into the real world of the receiver. An advertisement seeks to create enough contact between fiction and reality, sender and receiver, characters and consumer, for the passage of the product from one world to another to be feasible.
Source: 1, 2, 3, 4.
Interesting Door Mats.
Print Advertisements Using Illusions.
Escher's Illusion: Car Advertisements.