My Delusional Cousin
My cousin thinks she is a mermaid. She is 22 years old, and will tell you right to your face that she has been a mermaid since she was 11 years old, when she used a youtube spell to turn herself into one. She constantly wears a pearl necklace because that's where all her mermaid power is stored, and if it breaks, she will fall ill or possibly die.
Apparently, everyone can't see her tail because we don't 100% believe her. She says that her mermaid life is difficult because she doesn't live by any large bodies of water. She has this ritual where she fills a bathtub with salt water (table salt + regular nasty tub water), and bathes in it for HOURS at a time, every full moon. She does it out of fear that, if she doesn't, the spell will stop working.
In other words... For 11 years, she has been living in this fantasy world that this youtube spell has turned her into a mermaid. She has told boyfriends, family, and so many strangers, that she is a mermaid. Strangers either laugh or think she is crazy, and she gets super upset about it. She doesn't understand why people aren't more accepting of "her kind".