I think a good example of this would be the emotion of surprise.
For example, if someone were to jump out from behind you and yell "Boo!" and startle you, a cartoony drawing may protray you like this (I don't know how to describe it)
However, if you heard a sudden bang or some other strange noise, you're most likely going to be very confused or at worst a bit startled.
So how would you go about drawing that sort of body language? How would I make it look dynamic? Because I'm not sure if there's going to be much going on there.