+ today <= expire_on
+ end
+
+ def remind(reminder)
+ reminder.send(self)
+ ReminderDb.instance.record(self)
+ end
+
+ def reminded_on
+ ReminderDb.instance.last_reminder(self)
+ end
+
+ def create_reciept!(amount)
+ require 'nos_oignons/reciept'
+
+ reciept = Reciept.new(self, amount)
+ reciept.create!