Author's note: These are two of the characters from my "Thanks, Sister-in-Law" series. If you haven't read them, it's okay, because this is a 'prequel'.
I have the place to myself
, Andrea thought. At eighteen, she lived at home with her parents, her big sister Donna, and Jack, who was two years older than Andrea. Their parents both worked second shift jobs; Donna was commuting to nursing school, and Jack managed a franchised tune-up place.
Andrea decided to do one of her favorite activities: watch one of her parents dirty movies and masturbate. Being home alone meant that she could use the big screen TV in the living room.
Of course, it wasn't real porn. It was a collection of those late night cable erotic story anthologies. She selected one of her favorites, the one where an older man seduces a sweet young girl. She would watch it, replacing the girl with herself. But lately, she started imagining her brother as the older man.
It was wrong, and she knew it. But she also knew that he was pretty hot. She thought about his 5' 11" athletic body, and she would get goose bumps. She'd even seen Jack naked a couple of times. Once, when he was getting out of the shower, and another time when she walked in on him getting dressed. She wondered now, watching the familiar story, how big her brother's cock got when it was hard. Fingering herself furiously, she became lost in the thought of his cock sliding in and out of her.
* * * *
Stupidity should be painful
, Jack thought as he drove home early. Some drunk driver hit the transformer near his shop with their SUV. The police and the power company told him it would be tomorrow before a new one could be installed. After talking to his very upset District Manager, Jack closed the shop, sending his two techs home for the night.
And I still have to pay them their full salary for the day. That's going to screw my margin for the week
, he thought as he finally pulled into the driveway of his parent's house.
Jack was living at home until he could get enough money saved up to buy a house for himself and his girlfriend Mary. Once he had the down payment, he was going to get married, and move them both into their new house.
But for now, he lived in the same bedroom that he grew up in. He saw Andrea's little Honda, and knew she was home. He didn't see Donna's car.
Must still be at school
, he thought.
He entered the house through the carport. The house was quiet. He thought that maybe Andrea was meditating, which she liked to do. He took off his shoes, and walked quietly to the stairs, so as not to make too much noise.
But he heard moaning sounds from the living room. It sounded like a dirty movie. Jack crept down the hall, and peered around the corner into the living room. Not only was there a dirty movie on, but also his sister was naked and masturbating. Jack almost left her alone, but he couldn't. He hadn't seen Andrea without clothes for a few years, and Andrea's body almost stopped her brother's heart.
Andrea's about 5'6" tall, with red hair (this week), and a yoga sculpted body. She had perky B-cup breasts, and her nipples stood out like pencil erasers from her areolas. She was deeply in the throws of pleasuring herself.
Jack couldn't help but get hard. He knew it was wrong, but his hand went instinctively to the tent that sprung up in his pants. He started stroking his cock, looking at the sex on the big screen, and then his sister on the floor. He gasped when she said out loud, "Oh, yes, Jack, that feels so good!"
She was fantasizing about him! Jack didn't know what to think. He stood there frozen as his kid sister climaxed, letting out a grunt as she obviously gave herself an orgasm. Jack decided there was only one thing to do. He quickly shed his clothes, and revealed himself to Andrea. "Here's the real thing, if you want it," he said.
