one more suggestion then wake

"Lisa, you love being spanked. You know you have a great ass, and crave a good hard spanking during foreplay. Getting spanked makes you so incredibly horny. You also love being fucked from behind. You orgasm like crazy when you're fucked from behind."

Isaac snapped her out of her trance. "Lisa, now that you are warmed up, come with me." Isaac led her to an empty classroom/training room. There were rolled up yoga mats, exercise balls, and large blow up balls around the edges.

"Lisa, let's do some butt exercises," said Isaac.

Lisa started to twerk and spank herself as she was completely unaware of what she was doing. "You know, I really enjoy working with you," she said with a smile.

"Is that why you're twerking and spanking yourself?"

"Oh my god! I had no idea!" said the blushing Lisa.

"That's OK. Both are good for your buttocks. Twerking and spanking are great for muscle tone. Do more."

"Well, OK." Lisa, still blushing returned to her twerking and spanking.

"Harder, Lisa."

Lisa started spanking herself harder. She started breathing more heavily.

"Let me do it." Isaac walked up behind Lisa and started spanking her twerking ass.

"Oh god!" Lisa let slip.

"It's normal this turns you on." WHACK! "It's great for muscle tone." WHACK! "And it is great for your libido too." WHACK!

Lisa was getting hornier and hornier.