The Chronicles of Sheldon Mayer's Sugar & Spike
Sugar & Spike #1 
Reprints: The Best of DC #47 , Sugar & Spike No. 1 Replica Edition 
One of my favourite Sugar & Spike stories is from the very first issue, this story that introduces Sugar's Uncle Charley, her mother's younger brother, a traffic cop who frequently visits to play with his niece, who adores him because "he's only grown up where it shows". Spike is initially jealous, but is quickly won over by Charley's charm.
This story sets the pattern for most of the future Uncle Charley stories, where his ideas of how to handle children infuriate Sugar's mother, then seem to work, and then ultimately backfire because for all his trying, the children don't really understand what he's saying, but love him anyway.
Among other things, this story has the first appearance of one of my favourite lines, one Mayer liked enough to use a few times over the years. "If people don't want their things busted, they shouldn't leave 'em lying around on the ceiling!"
Characters: Sugar, Spike, Mrs. Plumm, Uncle Charley
Damage: one new chandelier and everything on the living room table
Punishment: Two trips into an increasingly crowded corner
"What's he talking about?"
"I don't know, but pay attention or you'll hurt his feelings!"