gistfile1.rb

module YourNamespacedModule
  
  def self.included(klass)
    klass.send :extend, ClassMethods
    klass.send :include, InstanceMethods   
    #klass.belongs_to :some_associated_model #an example of how to use with ActiveRecord
    klass.send :attr_accessor, :some_accesor_variable
  end
  
  module ClassMethods

    def boom
      puts "This is just like 'def self.boom' in a class"
    end
    
  end
  
  module InstanceMethods     

    def pow
      puts "This is just is just like 'def pow' in a class"
    end

  end

end
                                                

class User
  
  include YourNamespacedModule
  
end             

User.boom

User.new.pow