The Rubyologist investigates “beer goggles”:
Incorrectly estimate the difference in attractiveness between individuals
The term beer goggles suggests a mechanism that alters one’s perception. There are two mechanisms by which H could be incorrectly estimated. First, one could underestimate one’s own attractiveness (V) when intoxicated, thus reducing H. Empirical evidence suggests that this mechanism (i.e., drunks underestimating themselves) is implausible.
Second, one could overestimate the other individual’s attractiveness (B) when intoxicated, thus reducing H. Back in the good old days when they tested myths that did not involve explosions, the MythBustersTM tested this one. Unfortunately, due a flawed experimental design, wide variation in results, and a small sample size, the results were inconclusive. Other research from the University of Leicester is claimed to suggest that the estimations made by men are not affected while those of women are. The actual study (PDF) shows that the gender differences exist for age estimation, not estimation of attractiveness.