"Now to make sure you're learning something and not just milking me for backrubs," the teacher said, "I want you to see if you can pick out some things I've done that you could imitate in your own activities."

Her student was too busy groaning in pleasure as Candy worked an elbow in along her spine to reply. When it suddenly stopped, her eyes opened and she seemed to gradually remember she'd been called on by teacher. "Oh. Sorry. Um... I don't know, you rubbed my neck and my back. Isn't that it?"

"There is that." Candy resumed, but more gently, teasing her by withholding the more forceful treatment the...