instance_exec.rb

class Lol
  def where_am_i
    "within #{self.class.to_s}"
  end
  def winproc
    proc { "lol from #{where_am_i}" }
  end
end

def where_am_i
  'top level'
end

lol = Lol.new

puts lol.winproc.call
puts binding.instance_exec &lol.winproc