A long time ago, I saw a video on YouTube that was really freaky. Basically, it had somewhat scary/horrifying images that switched back and forth quickly. People who have seen the Sprite Sublymonal Messaging commercials would know what I'm talking about (as far as the image changes go). So lately, I've been trying to find it, but I have had no luck.
So I was just wondering if anyone knew what I was talking about, even with my vague descriptions (or even something similar to it).