I have always found beer goggles - the way we perceive people as being more attractive when we're drunk - to be kind of cool. We can essentially drink ourselves into being less judgmental and inhibited assholes.
Also, you're more likely to get laid and it will probably awesome - if not sightly awkward. Even still, awkward drunk sex is usually better than no sex at all. If nothing else, you got to pass out drunk - and possibly throw up - in someone else's house.
While I deeply dislike their use of a fat to skinny illusion to illustrate ugly and pretty, I still find the info within super informational. Either way, this infographic on the science of beer goggles lets us in on a bit of our social behavior and that's pretty interesting.