Alcohol often gets blamed for sexual assignations that, in the bright light of the next morning, seem unwise. It's called beer-goggling, but does it really exist? Does drinking actually affect how your brain evaluates the attractiveness of other faces, or do we just use alcohol as an excuse to hook up with the first willing target?

http://www.time.com/time/health/article/0,8599,1893671,00.html