The sound that 40-year-old glass makes when it spontaneously breaks due to improper temperature control (my museum doesn't have air conditioning. Really. The Museum of Art, alternatively, is currently undergoing a $35.4 million renovation).
Interestingly, after some ridiculous complaining by someone important enough to make changes, the large number of "inappropriately dressed" women was reduced to just a few. One of these unfortunate heathen women was removed from this particular case. We think that the gods? They were angry. It's hard to find righteous boobage these days.