Want/Need Glass designed by Inna Alesina, dishwasher-safe.
The small hole divides the volume of the glass into two parts: "need" (below the hole) and "want" (above the hole).From the comments section at Book of Joe, the final word on this has to be:
"Alesina Design, Inc. shall not be held responsible for ruined clothes as a result of misuse of this product."
According to Aristotle, once your needs are met you should carefully examine your wants so that you can live the best life possible. As in I want to buy this glass but I don't need it and it won't improve my life.