In the car, on the way home from school The Dormouse, who is sitting in the back playing with a Cinderella doll, says:

"Right now, Cinderella's a sidekick."

Me: "Really?"

"I mean, she's not a sidekick when she's wearing her ballgown or when she's dressed up, but when she's doing chores and stuff, she's a sidekick."

"Ooo-kay."

"But when I take off her ballgown and she just has her underclothes on, she's a sidekick."

"Do you even know what a sidekick is?"

"Sure, I do."

"Explain it to me."

"A sidekick is someone who does karate and stuff."

*pause*

"So what you're saying is, a sidekick is someone who... Kicks. To. The. Side?"

"Yep, that's what it is."