Mildly Titillating Science
… (N = 1041), a large gender difference emerged in the sexual attractiveness of happy displays: happiness was the most attractive female emotion expression, and one of the least attractive in males. In contrast, pride showed the reverse pattern; it was the most attractive male expression, and one of the least attractive in women. Shame displays were relatively attractive in both genders, and, among younger adult women viewers, male shame was more attractive than male happiness, and not substantially less than male pride. (more)
(no followup study on the sexual attractiveness of nerds clumsily affecting jersey-shore swagger after reading this.)