Yeah but I think he's wondering how the actor was able to do that. There were no cuts...he was just sitting there, said what he said...the camera never panned away...and then he puked. Where did that puke come from, you know? He couldn't have said what he said with a mouthful of pretend barf. The camera didn't cut away so that he could put the pretend barf in his mouth...
He said something and then puked...something that personally, I don't think I've ever seen before. Which is why it stood out.
The family in their car had just been driving all over the place erratically under danger of death which would make anyone sick, and maybe the boy's nausea was real, and the camera caught it? It would be impressive if that were the case.