Turns out, the theory known as "beer goggles" is true. File it under Captain Obvious studies, but a recent experiment performed in conjunction with the Universities of Glasgow and St. Andrews prove that we perceive relative hotness differently once we've knocked back a few: "The reasons behind this phenomenon have to do with alcohol stimulating the nucleus accumbens, aka 'the part of the brain which is used to determine facial attractiveness.'"--Yahoo And yes, the data collection here involved feeding subjects copious amounts of booze and having them rate the looks of members of the opposite sex as opposed to a more sober control group.
Again, so glad this important research is being done. (Eye roll.) But this does make me wonder: Have you ever been out getting your drink on at the club or whatever only to make it home with someone, get it on, then wake up in the morning and see them in the cold, bright light of day and think, "Eww...?"