derpy.rb

#!/usr/local/bin/ruby -w

class Cat
  def initialize name
    name = name.upcase
    
    define_singleton_method :name do
      name
    end
    
    define_singleton_method :meow do
      puts "Meow meow #{name}"
    end
  end
end

Catburger = Class.new do
  self_hash = Hash.new { |h,k| h[k] = Hash.new }
  
  define_method :initialize do |cat|
    self_hash[self][:cat] = cat
  end
  
  define_method :process do
    cat = self_hash[self][:cat]
    cat.meow
    puts "Processing now your catburger"
    puts "Your catburger is now ready"
  end
end

derpy = Cat.new "derp"
burger = Catburger.new derpy
burger.process