The Collaborative International Dictionary of English v.0.48:

Bung \Bung\, v. t. [imp. & p. p. Bunged; p. pr. & vb. n.
   Bunging.]
   To stop, as the orifice in the bilge of a cask, with a bung;
   to close; -- with up.
   [1913 Webster]

   To bung up, to use up, as by bruising or over exertion; to
      exhaust or incapacitate for action. [Low]
      [1913 Webster]

            He had bunged up his mouth that he should not have
            spoken these three years.             --Shelton
                                                  (Trans. Don
                                                  Quixote).
      [1913 Webster]