This Korean guy was on a live stream, then as has happened so many times, it looks like he sees something, he turns his head, then he collapses.

Only people mentioned by @oeralinda in this post can reply

Hiker-Kayaker-Bicyclist-Paddleboarder (⊙﹏⊙✿) life➭the way I see it, posted here ☯︎_0️⃣social.creditz

In response Rompt Theodoor to his Publication

that is creepy AF

slow that shit down and watch that blue light reflection that appears on the black tile background between the two dudes during the episode ... scrub it back and forth

(he's spockish looking too)

US LEGAL resident alien, WWG1WGA, Out of Darkness into Light. Tallyho!!

In response Rompt Theodoor to his Publication

I do not think he, or the others I have seen doing this, are looking at anything, it looks more like a severe muscle spasm in the neck, so bad, that the body has to follow the motion.

It is as if their heads are trying to do a 360° turn.