If you get a friend request from a random woman on Facebook, who you know nothing about and who shares no mutual friends with you, you usually just decline the request and move on with your life. And that's smart. Because as Redditor BrainRadio learned, once you respond, it's hard to stop. Do not open the pandora's box of your rage, because you cannot close it. 

It started with an innocent "hello."

And from there it got, to say the least, contentious.