Quote from Francis in The Grandparents
Malcolm: [answers phone] Hello.
Francis: Malcolm, listen, I need to know what Mom used to put in the hot tea when we were sick. Is she around?
Malcolm: I think she's changing the sheets on their bed. Grandma and Grandpa are here.
Francis: Oh, you're kidding. So, did they knock, or did you just hear their cloven hooves clatter up the driveway?
Malcolm: I can't be sure, but I think Grandpa spit at me.
Francis: Look, don't take it personally. They're primeval creatures with tiny little hearts.
Malcolm: Yeah, but there must be some reason...
Francis: Malcolm, they have stupid lizard brains. They're threatened by anyone with an ounce of ambition or intelligence. They'd eat you if they had better teeth.