I went to a tarot card reader in college. A little, fat lady who lived in the desert. She gave the claim that if you were not 100% convinced with her reading, it was free. After a blunt, it seemed like a fun thing to do on a lazy Saturday.
Naturally, I immediately questioned her gift and skill set. She gave me the standard reply of a seasoned mentalist or talented carnival barker that gets heckled. The part where I was convinced and gladly paid her $20 was when she ended the session by calling me by my childhood pet's name. The way it was delivered and the confidence in which it was spoken freaked me the fuck out.
Trust me, it was not a common name for a dog and it reminded me of Houdini's request of his wife upon his death. The tarot card reader hit a "code" word that only my intimiate family or friends would know.
Just my 2 cents...