The title translates into English as "A croaking by Hina's mudhen" (a warning of trouble).
Jerry gives an example how Lee Harvey Oswald was framed for the assassination of JFK, according to conspiracy theories. Willie Garson, who appears in his recurring role as Gerard Hirsch, has played Lee Harvey Oswald in three different, completely unrelated productions: Ruby (1992), Quantum Leap (1989) and Mad TV (1995).