I've had the teeth one, too. Been awhile though.
This thread reminds me of a story from grad school. I was a TA for an Intro course. I taught two sections. In one section, there was a grad student just taking the class for fun. On the last day of class, she hung out after class and invited me to a party her friends were having that night. I didn't know anybody except her who was going to be there, but it sounded cool so I went.
At the party, one of her friends was talking about some weird recurring dream she was having. I don't remember the details, but basically she was going on adventures with a group of other people which she later explained that she was like Willow in Buffy or Velma in the Scooby gang. I sat down with her for about 20 minutes in front of her friends asking her questions about the dreams and what was going on in her life and completely analyzed the dreams and her anxieties. It actually got intense for a bit. Very weird experience.