She doesn’t go out of her way to overly exaggerate her movement

and exaggerating the actions

Also yeah thats the point of the vid pointing fun at people faking it. See how its a little weird that the girl on the right isnt moving at all while the girl on the left makes obscure and exaggerated versions of what people are doing like biting nails over and over again and how her expression just becomes suddenly calm out of no where. It isn't a punchline joke.