Offer a backrub

"Well, Mum is quite tired today Steff - I don't think she'd be up to giving you a backrub" Carl replied.

"That's true... she'll probably just want to head straight to bed." Steffi said.

"Well, I could give you a massage?" Carl suggested. He crossed pretty much every part of this body at this point.

Steffi looked pensive. On the one hand, her lecherous step-brother would probably get off on this, but on the other hand her back was really sore. Besides - how bad could it be? Her mother had been telling her she needed to do more to get along with her step brother - maybe this was a peace offering?

"...OK - but no funny business! I'm leaving my top firmly ON!" Steffi warned, emphasizing her point with a shaken finger.

"Hey, hey.. what do you think I am, some kind of molester?" Carl defended

"We'll see won't we?" Steffi said, wondering if this was such a good idea. Well she had already agreed, and she couldn't exactly back down now.

Carl approached the side of the bed and sat down. Waiting for Steffi to roll over onto her front he watched her butt. He couldn't wait to get his hands on that. But how should he proceed?