the art of trolling
if this nightmare isn't enough to make you appreciate both filesystem permissions and backups then i don't know what is. "you can still use them" indeed. you can use them if you never want to sleep again.
(i broke the picture up because it was so large in one direction that every image host i tried scaled the original single image down to the point where you couldn't make out the words or even the biebers - though that might have been a good thing)