After fapping to the animation I started typing in random words to find more that have unique reactions. I found a few, including a "Sonic", lol. Then got bored and decompiled the flash. Below you can see full list of all available commands. Each set of words from one point wields same result:
Also there is something possibly hidden in the "secret" animation. Possibly something hidden to click on. Couldn't figure out what is it but it opens up following link: https://www.youtube.com/watch?v=eUYeBaCoseE