"Who wants to go in the water?" Tim asks, turning towards the waves as he stands up. Paul's hands guiltily pull away from his sister's ass cheeks as he considers the idea of using the waves to hide his erection.

"I'll go with you," Paul answers much to Sharon's dismay. Wiping his lotion-covered hands on his swimsuit, he joins his brother-in-law and they race towards the water.

"Not me, I'm sunbathing," Sharon says, smiling to hide her disappointment about her massage being interrupted. Paul's hands felt so good and she could tell by the way he was touching her that he... that he... what? Wanted to fuck her again? Is...