While "Dirt Nap" on its face can be a very funny episode, when one considers it from Elder Kettle's perspective up until the reveal it’s honestly pretty tragic. The two people you’ve come to raise and love and watch grow up, at a glance suddenly start calling you disgusting, commenting on your advanced age like you’re nothing but a burden,
and heavily imply they want to kill you or "put you out of your misery". Even with the Poor Communication Kills aspect some of the scenes can be really sad. Especially when Elder Kettle looks at himself in a pot and says "maybe I AM disgusting..."