Breasts or Buns?
“Emphasis on the upper female torso has recently given way to the lower area of the body, specifically the buttocks. Such a change happened quite recently [but now over 30 years ago!] when denim jeans became fashionable. In order to emphasize fit, jeans manufacturers accentuated hips. And after brand name jeans became so popular with the designer's name on the hip pocket, even more accentuation was given to the posterior. The more jeans sales increased, the more ads were used which emphasized the derriere, to such an extent, in fact, that this particular area may eventually surpass breasts as the number one sexual image of the female body” (from Browne’s Objects of Special Devotion: Fetishes and Fetishism in Popular Culture).
来源:https://www.psychologytoday.com/us/blog/evolution-of-the-self/201409/do-men-mostly-prefer-breasts-or-buns