Anal Bleaching !!!!!
There are more references to this nutty craze but the above link is the most informative.
I was naive enough to believe that I had seen and heard of everything possible. But a friend at work told me about this new craze -- Where women are running to and fro like fanatics trying to find shops with the necessary stuff to bleach their bung-holes.
Yes their bung-holes ........ Now I can truly say I've heard everything!!!