Something that should never be done... http://ruby.zigzo.com/2017/10/21/refinements-fancy-monkey/

crazy_integer_refinement.rb

module IntegerRefinements
  refine Integer do
    def to_s
      'TWO, ALWAYS TWO!!!!'
    end
  end
end

class CrazyInteger
  using IntegerRefinements
  def self.crazy_string(number)
    number.to_s
  end
end