Only cunt-busting Horny Sister can get her to stop

Tara and Jack had nothing to do, with their house having recently flooded so badly it ended up being a complete interior re-do. The refinishing work was done, and they were alone in the house together, but with just a couch and TV.

Jack had fallen asleep onn that couch in a black v-neck and the grey sweat shorts that made his package so obvious. Until the moving van brought the rest of the stuff he had that, she had a black shirt and black yoga pants. She hadn't brought underwear, thinking it wasn't worth unpacking and comfortable for the drive. But, it did leave her feeling unrestrained. And, worse of all she was bored and Jack her younger step-brother was the only way she could think of to have fun. He was 22, so quite used to it, but not like [tonight.

At first, she was thinking of maybe dipping his hand in cold water- that classic prank, but then the couch would be ruined. She closely examined his crotch, wondering if she could see him with a boner. She had been jealous ever since he walked in on her masturbating a while ago, but it was her fault for going at it on the couch. She was squeezing one of her breasts while fingering herself with two fingers- in full swing. He saw everything.

The she had an idea