I was one of a few dozen or so people that equipped the Glasses With A Number On Top hat before the date bug was noticedreported and subsequently fixed.
I continue to wear it both for the amusement factor and the fact that few other hats actually fit on my avatar. And before you complain about the jpeg artifacting in it: no, there is no lossless version of the image; it dates back over a decade to a time when 100x100 pixel avatars were the norm and was sent to me as a 100x100 pixel jpg.