Pierce Edmiston, Marcus Perlman, and Gary Lupyan
Probably the easiest thing to do is to imitate them. You could act out their movements, or easier still you could just imitate the sound they make.
It turns out that people are pretty good at vocal imitation. So let's see if you can tell what this person is thinking about.
Can you start with an imitation and gradually form something that is more wordlike simply by having people repeat the imitation over and over?
We have some suggestive examples of words with origins in imitations in English, like onomatopoeia, words like quack, sizzle, ooze, hiss, boom.
But can we watch it happen in real time, and gradually, as a function of iteration?