gistfile1.rb

class Punch
  class << self
    original_load = self.instance_method(:load)
    # if you want to call the original use:
    #   original_load.bind(self).call
  
    define_method(:load) do |file|
      raise ArgumentError, 'no filename supplied' unless file
      @data = YAML.load(File.read(file))
    end
  end
end

I'm not accepting this pull request.

why are you afraid of unbounded methods?