When I was 8 (and my brother 6) my mom picked us up from school one day. When we got home my mom had forgotten her keys so she knocked on the door for my grandma to let us in.

Now architecture is super important to the story: we lived in a very well-to-do apartment building, on the 8th floor, where each floor was a loooooong rectangle, with a single apt on each end (so two apts per floor). In the middle of the rectangle of each floor, there was a single elevator. The building was essentially all glass, there were no external fire staircases or ladders and the nearest structure was another building an entire block away.

Ok. So we knock on the door. My grandma yells from the inside "I'm coming!" so we wait. And we wait. One minute, nothing. So we knock again. Again my grandma: "I said I'm coming!". Three minutes, then five. She still isn't opening the door even though we can clearly hear her in the kitchen inside the house so we are getting pissed. We knock and knock and she just keeps on saying the same thing: "I said I'm coming! I'm coming right now!"

Ten minutes later, the elevator opens behind us and out comes my grandma. The apartment had been empty the entire time.

It's been 20 years since then and my mom, brother, and I all clearly remember talking to that voice that sounded EXACTLY like my grandma. Zero explanation. My grandma is still alive btw.

- SunnyBunnyBunBun