Bizarre reaction to a KO (video)

This is one of the stranger reactions to a KO I've seen. The punch didn't even seem to land that hard.

Right click and save.

That was a shot.Nice crisp strait to the temple.

I've seen that reaction a few times. In one old UFC Tank knocked out
some guy who fell into the same position. Tank proceeded to mimic
his fallen opponent in a show of grace and class. I got to admit it was
pretty funny though.

Yeah, Matua. That was truly bizarre, his whole body was shivering uncontrollably. I wonder what causes this instead of a KO victim simply going to sleep.

he looked like one of the dead in the original Dawn of the Dead

the guy must have never lost a fight up until then, he got so used to raising his hands in victory, he did it in defeat to...