Demi Lovato dropped by Late Night on Wednesday to discuss her unconventional beliefs  with host Seth Meyers. The singer revealed that she believes in both aliens and mermaids and has a deep interest in conspiracy theories. "How self-centered would we be as humans to believe that we are the only living things in the universe?" Demi said on aliens. Stranger still was Demi's obsession with mermaids, which she claims are actually alien species that are in undiscovered areas of our planet's oceans. To be fair, Demi admits that she knows that her ideas sound far-fetched and that she understands why Seth and others might laugh at her. Watch Demi's explanation of why mermaids are real above.