Year before I was born that was: sixtynine.

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Desmond Morris, a curator of mammals at the London Zoo, suggested that permanently enlarged breasts in human females resulted from hominid bipedalism. (…)

The link between bipedalism and permanent breast enlargement, according to Morris, has to do with the erotic nature of breasts. He argues that as early humans (hominids) began walking upright, face-to-face encounters between the sexes became the norm, affecting the position used in sexual intercourse: males would no longer mount females from behind as they do among non-human primates. In the non-human primate position, presentation of the female buttocks to the male is an erotic display that stimulates male interest and excitement. with the advent of bipedalism, Morris argues, if females were to be successful in shifting male interest around to the front, evolution would have to do something to make the female frontal region more stimulating to males. This was accomplished, Morris says, through self-mimicry in which female breasts came to look like rounded buttocks: female breasts became mimics of “the ancient genital display of the hemispherical buttocks.”

Szalay and Costello (1991) have continued this line of thinking, but argue that permanently enlarged breasts sexually arouse males not because they look like buttocks, but because they mimic the appearance of female genitalia.

{ Frances E. Mascia-Lees, Sarah Lawrence College, Why Women Have Breasts, 2002 | Continue reading }

photo { Reka Ebergenyi photographed by Eric Fischer }