For a week after Dylan and his mother's initial encounter, the two continued to meet in Dylan's room late at night. Karen would wait until Dylan's father had drifted off to sleep, then creep upstairs to encourage her son to masturbate while she watched. She liked to talk dirty and let him fondle her breasts through her nightgown; Karen even started masturbating herself while watching the lurid scene of her son beating off his meat.
It was like she was twenty years younger and crushing on a boy for the first time again, and though Karen knew that things with Dylan had gone way too far she couldn't deny what a thrill it was to be fooling around with a hot young man half her age. It didn't hurt that Dylan's penis was longer and thicker than any other cock Karen had ever seen; just looking at the thing made her wet between the legs. Fantasies of touching it filled her thoughts night and day. She wanted to hold her son's penis, suck on it, and heaven help her, have it fill her pussy. She knew Dylan wanted it too; he was growing more confident each night they met with more familiar touches and dirtier talk. It excited her that Dylan found her to be so sexy, but Karen needed the situation to have boundaries to limit her own guilt.
Dylan was just as pre-occupied with Karen as she was with he. It was weird for him at first, she was his mom after all, but she was suddenly incredibly sexy to him. She was so tan and skinny and beautiful, and the dirty things they did together put the zap on Dylan's horny teenage libido. He had stopped masturbating by his lonesome in anticipation of his mother's nightly visits.
It was a Saturday morning, a week after Karen had first watched her son masturbate. The pair of them were trying to act normal during breakfast while Dylan's father was present, until he announced he had to go to the office for a few hours. This was not unusual; Dylan's dad frequently worked on Saturdays.
Once the two of them were alone, Dylan looked over at his mom. She was wiping off the kitchen counter, wearing her short robe that showed off those sexy legs. "Mom, looking at you is making me so horny right now."
Looking over the shoulder with a teasing smile, Karen glanced at her son. He was only wearing a pair of shorts and the sight of his smooth chest and youthful muscle was making her as horny as he. "Sweetie, behave. You just masturbated last night, less than twelve hours ago."
"I know, but you're so damn sexy mom. I can't help it."
Karen blushed and shook her head. She had created a monster. She continued cleaning up the kitchen, noting how bold Dylan was becoming with her. It worried and thrilled Karen at the same time. Then she heard him say "See?"
Turning around, Karen saw that Dylan had pulled his shorts down. He was sitting at the kitchen table sporting a massive erection. With a sharp intake of breath, Karen's eyes were glued. "Oh my, Dylan honey. Just look at you. Did you get that from looking at me?"
"Yeah. I told you I can't help it. All I have to do is think about you and this is what happens."
With tunnel vision, Karen continued to stare at her son's boner. She took a step forward without even thinking about it. Karen was fascinated by its size, drawn to it. "Oh sweetie, I'm so sorry. Here I am wearing nothing but this skimpy robe, I had no idea what it was doing to you."
As Karen got closer she could see a dollop of pre-cum forming on the head of Dylan's penis. She wanted to touch it so badly. Would that be so awful, to give the son she loves pleasure? They were both consenting adults, after all.
Dylan whispered, "Mom? Do…do you want to try holding it?"
It was as though an invitation was all she needed. Karen nodded quickly, then knelt down to one knee and reached out with a hand. She gasped as contact was made; Dylan's cock was hot from all the blood flowing through it, and it twitched when she grasped it. "Dylan, baby, you really are horny aren't you? You're hard as a rock."