One day, you wake up as a human lie detector who is able to accurately tell when someone is lying. Your ability tells you that everything your best friend says, including their name, is a lie. (Pinning for the description not the actual prompt)
What about Fear of water? Phobias: xenophobia definition is a bit simplistic; yes 'strangers' but also more towards the fear of foreigners. Usually, used socially and culturally than just 'strangers' but I digress.