Here is the problem: for many years, the Supreme Court wrestled with the issue
of pornography, until finally Associate Justice John Paul Stevens came up with
the famous quotation about how he couldn't define pornography, but he knew it
when he saw it. So for a while, the court's policy was to have all the
suspected pornography trucked to Justice Stevens' house, where he would look it
over. "Nope, this isn't it," he'd say. "Bring some more." This went on until
one morning when his housekeeper found him trapped in the recreation room under
an enormous mound of rubberized implements, and the court had to issue a ruling
stating that it didn't know what the hell pornography was except that it was
illegal and everybody should stop badgering the court about it because the
court was going to take a nap.
- -- Dave Barry, "Pornography"