With their ambiguity and air of class and sophistication, the ads had the sensibility of a dreamy romance novel. Others, however, would see this as a sexually charged, artistic work that pushes the limits of the conventional and encourages the spectator to think in a specific way about the product and the brand. This explains why sexually explicit adverts tend to be directed at male consumers, whereas products aimed at a female market typically involve romantic imagery, and males who are wealthy, intelligent or powerful. Sex can be invoked in advertising using sexual double entendre or innuendos. What does it mean to call an ad pornographic? Research into evolution explains the use of sex in advertising and the differences between genders, due to different mating strategies. The ads washed away the misgivings of millions of American women who were uncertain about using hair dye. In every cigarette package came trading cards featuring pictures of sexually appealing women. For the world of advertising, Ford's work parallels the work of other daring artists who have done such avant-garde things as placing a crucifix in a bottle of urine or wrapping large buildings in plastic. The magazine and TV ads featured witty telephone conversations between two glamorous-seeming protagonists, with one of the lovers always off-screen or not visible on the page and an empty or missing bottle of Paco Rabanne never far from the picture. Furthermore, such ads create an association between physical attractiveness and the product, sending a message to the consumer that buying it they will help them achieve that physique. Usually the message is very subtle, and sometimes advertisements attract interest by changing stereotypical roles. There is no parallel celebration of the power of the vagina—a power to please oneself and one's partner, a power to generate new life, a power to engulf as opposed to penetrate. This "kiddie underwear ad campaign" was pulled only one day after it aired as a result of public outlash.