The Yankees recently held their first kangaroo court in over a decade. Mariano Rivera presided as judge. The Mariners also recently held a kangaroo court, and it sounds as though Ken Griffey, Jr. had better robes than Rivera, but that neither was dressed quite as poorly as Wade Boggs when he presided over the previous Yankees kangaroo court, if you believe the rumors.
Black's says that the origin of the term "kangaroo court" is uncertain, but that it can be traced to the mid-nineteenth century American West.
Ernster, the Virtual Library Cat
Above the Law - A Legal Tabloid - News, Gossip, and Colorful Commentary on Law Firms and the Legal Profession