Source : Free On-Line Dictionary of Computing

zxnrbl
     
         /sner'b*l/ Incorrect data introduced by transmission
        errors; any corrupted or uninterpretable data.
     
        The word originated in a 1978 advertisement for a
        Mockingboard, which "makes frogs croak, princesses shriek, and
        martians zxnrbl."
     
        "It's not misspelled on the original page.  The Internet must
        have zxnrbled it on the way to you."
     
        (1997-03-16)