Match the Bodypart to the Crewmember is a game played by the boys from the Dwarf.
When The Magic Flute proved too sophisticated for the Dwarfers to play, Kristine Kochanski mockingly suggested that they play "Match the Bodypart to the Crewmember" instead (she was being sarcastic on how uncultured they were), but was very dismayed to discover it was a game that they did actually play. Cat even noted that it was one of his favorites. ("Blue", Series VII)