Overly Attached Girlfriend started with a youtube video that went viral though. A bit different from a stock photo going viral like Harold or Distracted Boyfriend..
I'm glad those people embraced it and got something out of it. It's really unfair that some public photo of you can become a meme without your input at all. Techno Viking did not like being in that situation at all and sued the person who filmed him https://www.theguardian.com/commentisfree/2013/jan/24/techno... but there's no way back really.