This Is What Happens When You Don't Change Your Facebook Privacy Settings

A normal teenager noticed that people who weren't his friends were able to "like" his status and posted about it. Within 22 hours over 73,000 other people have liked his status, just to mess with him.

Facebook: ross.brah

It's basically the "broken window theory" - when you see someone else in your feed liked this status, you want to join in and "like" his status too (I know that's why I did). It kept going and going and thousands of people joined in. Sort of like a chain letter of trolling.