Short Stories by Hope/A Dark and Stormy Night
Billy woke up slowly. It was still dark, but at least the storm had passed over, even though he could still hear rain pattering on the window pane. He stretched out under the duvet and realised that he wasn't alone in his bed.
Susan was seven years old, three years younger than Billy, and for most of the time they got on together pretty well. Their mother could be heard sometimes, thanking Og that they didn't squabble and fight like some other siblings. She was laying curled up with her back to him and in the dim light, all he could see was her dark hair.
It wasn't unusual for Susan to sneak into his bed in a storm, especially when thunder and lightning crashed and flashed around the house. They would lay and count the seconds to see how far away it was. If he was honest, Billy quite liked having someone to snuggle up with, although he would never admit it.
Billy yawned, rolled over and wriggled up close behind his sister and put his arm across to pull her tight into a spoon. His intention was to go back to sleep, but he gradually became aware of two things: His cock was getting stiff, and it was pressed right against Susan's bum.
The two children were not entirely innocent. Back in the summer, up in the tree house Daddy had built, they had played games like Strip Jack Naked which usually ended up with them looking at the parts of their bodies that were usually kept covered. No touching though by some unspoken agreement, although Billy would amuse her by rubbing his stiff cock, before he came over all embarrassed and covered himself up. In private, he had been masturbating for a while and recently had even made some boycum when he climaxed.