A scientific study has revealed why men stare at women.  (Spoiler alert: It's the boobs and stuff.)  The study, published in the European Journal of Social Psychology, reveals that men look at women like objects, breaking them down and categorizing them according to their body parts.  In other news, the sun is expected to rise in the east tomorrow.

What wasn't expected? Women look at women the same way.

Sarah Gervais, assistant professor and lead author of the study, said both men and women see men as a complete package of what they offer physically and what their appearance dictates in terms of character. Gervais said men and women both focus on the sexual parts of a woman. Men do it as a way to check women out, while women do it to see how they measure up.

"Men might be doing it because they're interested in potential mates, while women may do it more of a comparison with themselves," Gervais said.

So there you have it, guys. Next time you get busted by your girlfriend for looking at another woman, your go-to excuse is: 'You were doing it, too!'