A childhood belief about vampires

When I was around five, I became rather fixated with vampires. First, I thought my mom was a vampire, and thought she would bite me at night while I was sleeping. Then, I briefly thought that I had somehow become a vampire, because I thought my teeth were poinity, and that I'd have to spend all my life controlling myself and trying not to bite my parents.

Finally, I thought that vampires would come into my bedroom through my window and try to bite me. I thought the only way I could stop them was by sleeping with the covers up to my chin. My theory was that since they'd have to pull back the covers to get to my neck, they simply wouldn't bother. And if they did try to pull back the covers, I'd immediately wake up and they'd flee. It became a habit, and it was only in the last few years that I felt safe sleeping over the covers, even though I wasn't scared of being attacked by a vampire anymore.