Cloudy w/ a chance of meatballs style mouth?

I’ve recently gotten into rigging and I want to make a cartoony looking face. I’ve got it all pretty much figured out, except the mouth. Does anyone know how I would rig something like that?

Show what you’re talking about. I don’t know about anyone else, but I haven’t seen the movie, and I’m not going to go googling just to try and figure out what you want.

Heres a few examples of what I mean:

Here’s a quick rundown
Here’s a slower tutorial (don’t forget you can adjust playback speed on YouTube)

Here’s something showing you the technique they used was similar.