What should you do when a light fitting in your apartment starts gushing litres of water?

You know, besides race to remove thousands of dollars of electronics from the area, along with your birth certificate and whatever other important documentation you may have on your desk because you’re in the middle of moving house?

Had this happened just an hour later, it would have been right in the middle of my real estate inspection.  Gold.

Had it happened even later, I may not have even been here to save my stuff.  Poor form, apartment; poor form.