metaclass.rb

# Class#meta..class

class Class
  def method_missing(meth, *args)
    unless meth.to_s =~ /\A((?:meta)+)class\z/
      super
    end
    level = $1.gsub(/meta/).count
    level.times.inject(self) {|klass, _| class << klass; self end }
  end
end