It was my 18th birthday. My mother was at my bedside, having just woken me up. I first felt her breasts - her huge, beautiful breasts - caressing my chest through her t-shirt, which was stretched taut, and the sheet. I opened my eyes and she was staring into them, smiling, nibbling slightly at her lower lip.
"Hi Brian," she said. And she lowered her face down, and for the first time ever, kissed him lingeringly on the lips. "I love you. Happy birthday."
"So," she said, tracing her finger along my chest. "I've got a plan for you today."
"Oh?" he said. He could feel her breasts pressing against him and it wasn't long until his cock started stiffening. "What's that?" he gulped.
"Let's just say you'll have to work for your present. But first, I want to catch you up a little." She kissed him softly on the lips. "Mommy's going to tell you a story."
***
It began, she said, when she was pregnant with me. Her body responded well to pregnancy. Despite her extremely petite physique - barely 5 feet tall and slim -- she had always had very large breasts. She was a DD at 18. But soon she got pregnant. And her breasts slowly got bigger. She switched to an F cup, then a G. Her breasts had ballooned to near comic proportions.
Her husband, unfortunately - and, to Brian, this was insanity - didn't seem to care. He was growing more distant even as his wife's pregnancy continued and her bust continued to expand.
She also grew more lovely. Her dark hair more lustrous. Her skin toned and soft. As her belly and breasts expanded, her ass did as well. It was a bubble butt; she couldn't argue with what she saw in the mirror.
Meanwhile, she was increasingly horny. Her husband had seemingly lost interest, but her sex drive had never been so high. She masturbated constantly while he was at work, tweaking her huge, hard nipples and squeezing her breasts as she came. She spent time staring into the mirror, not believing how her body had transformed - and how much it turned her own. At other times, just the thought of her increasingly voluptuous body made her weak in the knees.
Soon, she gave birth. For a few weeks, Brian's father stuck around, but not for long. He left - for another woman, it turned out - and Brian's mother surprised herself. She wasn't devastated. The divorce settlement didn't hurt - she was essentially set for life. Sure, it would be tougher to raise a child, but she needed something. She needed a lover. And she realized she could raise one. Have a child that loved her newly curvy body as much as she did.
***
For the next 18 years, Brian's mom had two goals: keep the body she loved and raise a loving boy. She accomplished both goals. The first wasn't easy. She worked out for hours a day, tightening up her already slim body. But she also found a breast-growth cream on the web - it wasn't entirely legal, perhaps, but she was willing to give it a shot. And it worked. She rubbed the cream on her breasts, on her ass, on her vagina. Each swelled, particularly her chest. After she finished suckling Brian at age 4, they went down to a FF, but soon, massaging cream into them every night and continuing to pump milk, she went passed her biggest size to a HH cup. She loved her huge breasts and she made a vow to save them for her baby boy.
All the while, she raised her son. She couldn't exactly hide her body from him - that was physically impossible, given her amazing dimensions - but she tried to just tease him periodically. She'd wear a bikini by the pool, or drop her towel when he walked by bathroom after she'd taken a shower. He'd get a quick look at her butt, and even her breasts - they were so huge and her torso was so slim that he could see them from the back.
And sure, Brian's friends all commented on his mother's beauty and body, especially as he got older. High school was tough: Lots of comments from his male friends and potential girlfriends who got jealous quickly.
Beyond that, it was a normal childhood. And for his mother's part, she focused on raising a good son - and one who was in shape. They would work out together - another time Brian would get a view of his mother's insane body: she liked to wear skin-hugging workout outfits. But he'd masturbate to the thought of her, then go play soccer and sneek around like any other kid.
The night before his 18th birthday, his mother had tucked him in, something she hadn't done in years. As she kissed him on the forehead - her giant breasts very briefly directly in front of his face - she whispered, "It's going to be a fun day tomorrow."
***