I saw a very interesting commercial. One little boy went to a machine selling soft drinks. He was too short to reach a certain brand because the button was located at a higher level. So he inserted a coin and pushed the button of a more popular brand that he could reach. One can came out. He did the same to get another can. Then he put the two cans together and step on them to reach button of the less popular brand. After the can he wanted came out, he took it and went away enjoying his drink.
I think the person who designed this commercial should be fired. He was giving more exposure to the competitor. There is also a message sent out: the competitor sells two while you can sell only one.
I have seen worse advertisememts and I thank the advertisers who want to reach high by stepping on me.