The Free On-line Dictionary of Computing (19 January 2023):

wirewater

    programming fluid.  This melds the mainstream slang
   adjective "wired" (stimulated, up, hyperactive) with
   "firewater"; however, it refers to caffeinacious rather than
   alcoholic beverages.

   [Jargon File]

   (1995-02-27)


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

wirewater
 n.

    Syn. programming fluid. This melds the mainstream slang adjective ‘wired’
    (stimulated, up, hyperactive) with ‘firewater’; however, it refers to
    caffeinacious rather than alcoholic beverages.