I have some serious sea legs and almost never get motion sickness. The fullscreen youtube vid got me. Great experiment.
[0] is a good alternative.
[1]: I'm serious: https://en.wikipedia.org/wiki/AaaaaAAaaaAAAaaAAAAaAAAAA!!!_%...
Maybe this is a way to test those sea bands that I have that I think generally work. But now I do have motion sickness and felt it almost right away.