What Does This Sound Look Like?

I don't know if I've mentioned this before, but I have synesthesia. Specifically, in some sounds I can hear shapes and/or light forms, and I also have a spacial sequence form of synesthesia in which I have always experienced months and dates as being fixed points in space. I know right, what the hell am I talking about?

For most of my life, I didn't know this wasn't how everyone experiences the world. Then one day I made on offhand comment when I was watching a baseball game with my family that Tony Gwynn "has the roundest voice I have ever heard" (BECAUSE HE DOES) and a room full of people turned around and looked at me as if I had spontaneously sprouted a second head and said head was that of a giraffe. Of course, I now know that I have an amazing superpower as well as an explanation for my eerily good recall of dates. However, my ability to explain what it's like is basically limited to reciting my theory that the reason people use drugs like acid is so they can feel the same way I feel all of the time. It's not explainable. I don't see the space calendar, I don't see any shapes floating around when Tony Gwynn starts talking, it just is fixed in space, it is round. See, totally clear now isn't it?

Anyway the whole point of telling you this is that this video is amazing, and the sand thing provides a better example of what I'm talking about than my shitty explanations could ever approach and that's not even the best part of the video. The water, you guys. The water and the coil. Dude.