Jiggle

With this deformer, you can make points bounce depending on the animation of a character, for example to animate a fat belly. Caution: The fun factor is so great that you should only deal with this object once you have completed all the urgent tasks for the day!

Although this object is a deformer, there are a few differences that need to be taken into account. Like any deformer, you can also group it to an object so that it is deformed by it. Unlike other deformers, Jiggle does not affect all objects with which it is grouped under a common parent object. This is because Jiggle must track the movements of all the points on which it acts. So if you want to deform several objects with it, all objects must be assigned their own deformer.

Example