"Then I had a wicked idea. I said:"
"'Dear, can you set it up so that the system displays your arousal level for me, so I can always know just how much I'm turning you on?'"
"He asked why I'd want to know that."
"'It's so I can perfect my teasing techniques on you!'"
"He got very excited, and being submissive in such situations, he started to tell me how he could do it."