[1] : Jargon File (4.3.1, 29 Jun 2001)

mess-dos /mes-dos/ n. semi-obsolescent now that dos is derisory term
   for ms-dos. often followed by the ritual banishing "just say no" see
   ms-dos. most hackers even many ms-dos hackers loathed ms-dos for
   its single-tasking nature, its limits on application size, its nasty
   primitive interface, and its ties to ibmness and microsoftness see
   fear and loathing. also `mess-loss', `messy-dos', `mess-dog',
   `mess-dross', `mush-dos', and various combinations thereof. in ireland
   and the u.k. it is even sometimes called `domestos' after a brand of
   toilet cleanser.


see also:
ms-dos fear and loathing 

[2] : The Free On-line Dictionary of Computing (27 SEP 03)

mess-dos
     
        /mes-dos/ or ms-dog, messy-dos, mess-dross, mess-loss,
        mush-dos derisory term for ms-dos.  often followed by the
        ritual banishing "just say no"
     
        most hackers even many ms-dos hackers loathe ms-dos for
        its single-tasking nature, its limits on application size, its
        nasty primitive interface, and its ties to ibmness see
        fear and loathing.
     
        in ireland and the uk it is sometimes called "domestos" after
        a brand of toilet cleanser.
     
        jargon file
     
        1994-11-16
     
     
see also:
ms-dos ibm fear and loathing jargon file 

Mess-Dos >> M Words
Mess-Dos, definition of term: Mess-Dos
mess-dos_pag1.html