DuckCorp Dico

Found one definition

1.                 From The Jargon File (version 4.4.7, 29 Dec 2003):
                   
   
   
                   
                     
   frotz
    /frots/
       1. n. See frobnitz.
       2. mumble frotz: An interjection of mildest disgust. The word ‘frotzen’ is
       live in this sense in some eastern German dialects; the safe bet is that it
       came to hackers via Yiddish.