Uncle Wacky

This house reminds me of that wacky uncle who loves to walk behind the couch, while increasingly squatting, so he looks like he's walking down invisible stairs.

Double D

The Double D refers to Dumb Donald from Fat Albert.
In my memory, Mushmouth was the kid with the hat pulled over his face, and every time I would see a building with its roof pulled down past a story or two, I would grumble, “Mushmouth!” Turns out, I’ve been mis-muttering all these years.