A few weeks had gone by since Julian had ejaculated over his mother's breasts, and, as was customary in their relationship, nothing had been said. They carried on as if nothing had happened. They both knew though. Julian continued masturbating at night having added this new memory to his fantasies, remembering how his sperm had fired over her breasts, how she touched his penis, her fingers working his foreskin, and how he had lost control, unable for the second time to stop his penis from doing what it had only done in secret before, shamelessly spilling great gobs of white cum out onto his own mother's body. Most of all, her nipple was burned into his memory, glistening with his sperm, splashed across both of her breasts. It was this vision he would focus on as his testicles released another load of sperm, firing onto his chest, stomach and pubic hair.
For Jessica's part, she thought about her eighteen year old son's penis quite often. How big it was, what it felt like to touch it, how perfectly formed it was, and how her own body had responded to this turn of events. She didn't have any plans to escalate though. Enough was enough.
Then one summer morning, they were both getting ready to leave the house to go shopping. Jessica was wearing her short sundress again and she squatted down on the stairs leading from the living room to tie her shoelaces. Likewise, Julian was in the living room having knelt down across from her for his own shoes, about a yard in front of her. He glanced up as he did up the laces, and as he did so, his heart leapt. While his mother's legs were open as she attended to her shoes, there was a direct line of sight between his mother's inner thighs to her panties. She was wearing white panties, with a cotton gusset, hiding her most intimate folds, but above the gusset was a lacy, translucent material clearly showing the outline of her pubic hair. A few stands of pubic curls escaped one side of her panties, and between her legs he could make out the curve of her buttocks. The mound of her vulva was clearly visible.
Julian froze. Inside his sweatpants, his bulky penis began to arc upwards. He couldn't move for fear of an embarrassing tent being clearly visible to his mother. Jessica glanced at her son and immediately realized what had happened. Instead of snapping her legs closed however, she just stared at him for a few electric moments. His eyes fixated between his mother's legs, staring at her panties, her eyes staring at his reddening face.
After a few moments, Jessica came to. "Come on Julian, let's go" she said. She brusquely stood up.
Julian remained frozen, crouched down, his hands on his shoelaces, with his hard penis jutting out inside his sweatpants. "OK Mummy, nearly ready," he whispered. But his penis wouldn't soften. Jessica stood on the stair step and folded her arms.
"Come on then Julian" she said. "Time's a wasting."
"Uh, OK Mummy" he said, looking up at her slim legs. He slowly stood up. A massive bulge was clearly visible. Jessica looked down at it, but didn't say anything.