Three characters are seen taking a bath together. However, there are no explicit details and nothing is shown.

A tree dies, and an apple is shown rotting. Not very graphic.

Characters start rotting.

the clock says "STUPID" pretty loudly

Near the end, time is sped up so that the main puppets rot away. One of their eyes' pop out, they have disgusting things in their hair, and basically all of their rotten versions look disturbing.