The Jargon File (version 4.4.7, 29 Dec 2003):

feeping creaturism
 /fee'ping kree`ch@r?izm/, n.

    A deliberate spoonerism for creeping featurism, meant to imply that the
    system or program in question has become a misshapen creature of hacks.
    This term isn't really well defined, but it sounds so neat that most
    hackers have said or heard it. It is probably reinforced by an image of
    terminals prowling about in the dark making their customary noises.


The Free On-line Dictionary of Computing (30 December 2018):

feeping creaturism

   /fee'ping kree"ch*r-izm/ A deliberate spoonerism for creeping
   featurism, meant to imply that the system or program in
   question has become a misshapen creature of hacks.  This term
   isn"t really well defined, but it sounds so neat that most
   hackers have said or heard it.  It is probably reinforced by
   an image of terminals prowling about in the dark making their
   customary noises.