Demi Lovato had a secret twin sister locked in her basement.

In 2015, Tumblr users started a joke that pop singer Demi Lovato had a twin sister named Poot living in her basement. How'd this one begin, you ask? Well, a photo of Lovato from an odd angle with bright lighting rendered her almost unrecognizable. And the internet started a rumor that it was actually a photo of Poot, who had escaped. Now, she lives on in meme history.