Being a fan of the Half-life games, I find this hilarious. For those of you who have played the games, you'll get a chuckle. If you don't know what I'm talking about, this caller is describing a reoccurring situation in the video game but passing it off as fact on a famous radio show about the paranormal. It's only a few minutes long so give it a listen. You won't be disappointed.
You can read a little more about it on Skepchick.