On the way home from Joliet, passing by the Mobile Refinery (or The Cloud Factory as Punkin refers to it) led to a very crude* explanation of the actual purpose of that factory as well as the following Earth Day appropriate discussion:
(*I am very punny)
Punkin: There's the cloud factowy!
Shortcake: Punkin, that is smoke and it is very bad for the Earth.
The Mrs.: Because it's a type of air pollution. It makes the air that we breathe dirty.
Shortcake: Yes, that is pollution and it's bad for the air. And smoking is very bad for your body. So Daddy should quit smoking.
Punkin: Daddy doesn't smoke. Only Ewik smokes.
Shortcake: (looks out the window, deep in thought)
The Mrs.: Shortcake, do you think Daddy smokes?
Shortcake: (giggling) I don't know.
Shortcake: But what are those Camel things he has?
The Mrs.: What do you think they are?
Shortcake: Smoking things?
The Mrs.: Well, I think I'll let Daddy explain it to you. You'll have to ask him about it.
Shortcake: Okay. But are they smoking things?
The Mrs.: Yes.
Shortcake: So Daddy smokes?
The Mrs.: You'll have to ask him.
Punkin: You know what else is weally bad for da Ewath?
The Mrs.: What?
Punkin: Mean people.