Extra ad on StarBuck coffe cup.
The main function of Extra chewing gum, white series, is to whiting your teeth. The advertisement is printed at the bottom of StarBuck coffee cup. When customer drink coffee in StarBuck, other peron can see the ads of Extra at the bottom of the cup, and I'm sure it is very impressive.
Besides, people who drinks coffee quite often may worried about the color of their teeth, so to print this ads on the bottom of the coffee cup, especially the cup of StarBuck must be very effective.
It is really a brilliant ads.
Hahahaha - Great bit of advertising, love it!