Cathy was 38 years old and had been married to her husband Davie for about 2 years. Davie was 45 years old and a nice guy but not a lot to look at. He was mostly bald and not in very good shape but she still loved him.
Davie had a son from his first marriage named Billy. Physically Billy was the exact opposite of his father. At 18 Billy was the captain of his high school foot ball team and was in great shape. Billy was well tanned and muscular from staying outside playing sports. He had dirty blonde hair which he kept cut short and light blue eyes.
Over the last few months Cathy had found herself fantasizing about Billy, she was not proud of this but could not help it. At night when her husband Davie was making love to her all she could think about was Billy.
While Billy would be in the back yard working or playing ball with his friends, she would stand at the window and stare at his beautiful formed body. He would be out there with no shirt on, did he know how much he was teasing her? Billy had become the only thing she thought about when she masturbated. He had become her ultimate fantasy.
While doing the laundry she would pick up his boxers and hold the crotch thinking about his cock and balls being in her hand. Once she even masturbated while wearing a pair of his boxers. Living with him was killing her. Some times he would come downstairs at night with nothing on but his boxers and Cathy would try not to stare.
One night Cathy was doing laundry and did not know Billy had come home yet. She walked into his room carrying some of his cloths and got the shock of her life when she walked in the door. Billy had just gotten out of the shower and was standing in his room completely naked with the towel over his head drying his hair.
Cathy knew she should turn around and walk out as quick as possible but she could not. She was so stunned that she could not move, the only thing she could do was to stand there and let her eyes move up and down his young hot 18 year old body. Unlike his hairy Father, Billy was smooth all over. His chest was thick and his shoulders were wide. They tapered down to a small slim waist line with 6 pack abs. His ass cheeks were round and firm with muscle.
Her eyes moved past the small trimmed pubic hair and were suddenly amazed. As Billy was shaking the towel across his head his long thick cock was swinging back and forth. She could not believe the size of it. It was limp but probably hanging 6 inches long and the head was huge and dark. It was much different than his fathers, much larger!
Gaining control over herself she quickly turned around and walked out before he took the towel off his head. As she quietly closed the door back she leaned against the wall breathing hard.
She stood there for about 5 minutes recalling what she just saw, just from these thoughts she could feel drops of pussy juice starting to run down her legs. Cathy fingered herself to orgasm 3 times that night thinking of Billy's huge cock being in her.
The next weekend Davie was out of town on business, so it was just Cathy and Billy at home. Erotic thoughts entered Cathy's head every time Billy walked into the room now. She thought it was bad before but since seeing him naked he consumer every thought she had.
That Friday night Cathy was sitting on the couch watching a movie, wearing just a T shirt and some very thin high cut shorts. Being that she was about to go to bed she did not have any bra or panties on under them. Billy had just got home about 30 minutes ago and was up stairs taking a shower.
Billy came down stairs after his shower wearing nothing but a tight fitting pair of boxers, Cathy quickly tried to focus on the TV so not to stair at the huge lump in the front of his underwear. Billy gave her a big smile and said hey step mom! Cathy smiled back and asked him did he want to watch TV.
Billy sat down on the coach close to Cathy and told her he was almost too tired to watch TV. He had be at ball practice all day was was beat. Cathy told Billy she would get up so he could lay on the coach and relax. Billy smiled and told her she did not have to do that, the then asked could he just lay his head in her lap. Cathy tried to pretend the question did not turn her own, but she could feel her face turning red. She smiled at Billy and said sure.
Billy laid down his face just inches from Cathy's pussy which was already getting wet. Cathy knew the only thing separating his face and her pussy was a thin piece of fabric, she started to pray he could not smell her pussy getting wet. As she looked down at his face she also noticed that her nipples were hard. Since she was just wearing a T shirt they were easy to see.