The science of being a man who's an ass maniac
Is your obsession with a woman's ass anything new? David Bass, Ph. D., a professor of psychology at the University of Texas at Austin, claims that you are attracted to a woman's bottom for the same reason that you are attracted to her breasts, hips, and waist: because these traits were an indicator of the fertility of your ancient ancestors.
Bass says that the male evolved to find the right female. If a woman has a big butt, it's a signal to your brain that she probably has enough fat to get pregnant, he says. And if her ass is saggy and round, then she's probably young, which in cave days would make her a good candidate for carrying a cave baby.
"It's taboo," says Eric M. Garrison, a sex expert and author of Mastering Multiple Sexual Positions. "We are not allowed to go there. And when it comes to sex, there's something brutal and dirty about standing up from behind."
Geography and culture can only influence how resourceful you are. For example: 59 percent of Argentine men pay more attention to their buttocks than their chests. According to a British study by University College London, British men don't pay as much attention to their butts.