Oh OSI, oh OSI
        (to the tune of O Tannenbaum)
 
        Oh OSI, oh OSI,
        Your rules are always changing.
        Oh OSI, oh OSI,
        Your rules are always changing.
 
        Each year you bring new protocols,
        More overhead and service calls.
        Oh OSI, oh OSI
        Your rules are always changing.
 
        Oh OSI, oh OSI,
        With seven layers burdened.
        Oh OSI, oh OSI,
        With seven layers burdened.
 
        No matter where I turn to look,
        There comes another colored book!
        Oh OSI, oh OSI,
        With variation, sagging!
 
        Oh OSI, oh OSI,
        The source of my frustration!
        Oh OSI, oh OSI,
        The source of my frustration!
 
        A plebescite in 92
        Will split a layer into two;
        Oh OSI, oh OSI,
        Amoebic reproduction!
 
        Oh OSI, oh OSI,
        Eternally unfolding.
        Oh OSI, oh OSI,
        Eternally unfolding
        
        Oh, can the C C I T T
        and I S O at last agree
        On OSI, on OSI,
        The final net solution?
 
        Oh OSI, oh OSI,
        Ever in negotiation!
        Oh OSI, oh OSI,
        Ever in negotiation!
 
        Perhaps one day I'll live to see
        A multi-vendor community!
        Oh OSI, oh OSI,
        With endless promise laden.
 
        Oh OSI, oh OSI,
        Your rules are ever changing.
        Oh OSI, oh OSI,
        Your rules are ever changing.
 

- Vint Cerf
  December 1985