this article tells us that men cant think rationally with beautiful women on their minds.

In a study conducted by psychologists at McMaster University in Hamilton, 209 students were shown pictures of men and women of varying attractiveness. The photos were from, a Web site that lets viewers rate the desirability of people who submit pictures of themselves on a scale of one to 10.
The students were then offered the chance to win money. If they rolled double digits on dice, they could accept a cheque for between $15 and $35 the following day, or wait a week to eight months for a larger sum — $50 to $75. After viewing pictures of “hot” women, male students were more likely to choose the immediate option instead of waiting for the larger reward.
Female students, on the other hand, were not swayed by images of “hot” men and chose the larger reward.</p>