class NilClass
  def include?(*args)
    false
  end
end

module MethodPrependAndAppend
  def before_method(m, &blk)
    alias_method :"#{m}_before_extending", m
    define_method m do
      instance_eval(&blk)
      send :"#{m}_before_extending"
    end
  end
  def after_method(m, &blk)
    alias_method :"#{m}_before_extending", m
    define_method m do
      result = send :"#{m}_before_extending"
      instance_eval(result, &blk)
    end
  end
end

Class.send :include, MethodPrependAndAppend