Ruby Closure Issue

omglol.rb

require 'rubygems'
require 'active_support/all'

module Haha
  extend ActiveSupport::Concern

  module ClassMethods
    def make_lol(&block)
      define_method :lol do
        puts instance_eval &block
      end
    end
  end
end

class Omg
  include Haha

  make_lol do
    stuff_to_buy
  end

  def stuff_to_buy
    "skeet_blanket"
  end
end


puts Omg.new.lol

#[ruby-1.9.3@campaign_manager](archive-CMGR-1760):campaign_manager$ ruby omglol.rb 
#skeet_blanket