Cindy and her youngest son Johnny looked into each other's eyes in the back seat as the group had parked for the night. Jeff and Adam, her two older boys, were asleep in the front.
Cindy reached over to Johnny's crotch and felt his hard cock through his shorts. Johnny smiled back and started whispering.
"I want you to have my baby mom...I really want to have a kid. You could pretend its dad's. When I'm 36 it'll be 18...how mad will that be mum..."
Cindy thought about how much she loved her son. She knew she wanted to have his baby but now? Maybe this was the right time.
Cindy smiled back and nodded. Johnny jumped up in excitement. Cindy opened the car door and led Johnny out. Together they both walked to a grassy area near a river and lay down together in the grass. The sounds of the river gushing and the leaves flowing were music to their ears.
Cindy furiously shoved her tongue into her son's mouth and rubbed his shorts vigorously. She climbed on top of him and could already feel how hard he was beneath her.
"I want this so bad mum I'm gonna explode!"
Johnny watched as his mother pulled up her dress and yanked his shorts down to his knees and seized his cock. She quickly licked the tip and then positioned herself over his cock. Cindy screamed out as she felt his already soaked dick thrust up into her. Johnny groaned and moved his hands towards her breasts and squeezed as he continued thrusting. Cindy matched him by plunging down onto his dick as far as she could so that he could feel his dick go higher than he ever felt.
"Oh FUCK mum don't stop doing that! I'm gonna fucken cum harder than I ever have!"
"Don't cum yet build it up Johnny more cum will come out!"
Johnny braced himself as he slowed down while Cindy leaned down and licked his lips. He kissed her cheek and then her forehead while he was still shoving into her.
Johnny then flipped his mother over onto the grass and positioned himself over her. He then pounded right into her.
"Sorry mum but I can feel it, this is gonna be the biggest cum ever and I need to do it now!"
Cindy looked into her son's eyes and nodded and then looked up into the moon. This was it. 9 months from now she'd be having her youngest son's baby as long as she didn't take her pill. No turning back.
Johnny continued shoving his dick as far as he could and watched her scream out. Thrust after thrust Johnny could feel his balls tighten. Cindy closed her eyes and lifted her hips up and wrapped her legs around his waist so he could go even deeper.
Johnny could feel his orgasm starting and started screaming out and Cindy started screaming too. He then unleashed balls and balls of cum right into his mother and could feel his entire body going numb. He kept cumming again and again until he finally stopped. He couldn't move anymore but he didn't want to take it out so he stayed put, high up into his mother, hoping the last drops of cum would come out. Cindy could feel his cum all inside of her; he was right that was a lot.
Johnny then felt his dick softening so he kissed his mother one last time before getting out and flopping on the grass next to her. Cindy still felt herself vibrating and tried to calm herself down.
She opened her eyes and saw her 18 year old son right next to her. As long as she didn't take the morning after pill after this she would most likely be pregnant with his baby. She saw what beautiful features his son had and thought about what the baby would look like. What if she was going to have a boy? Would she have feelings for him too? Would that be too weird? Cindy thought about having a threesome with Johnny and their son 18 years from now and chuckled to herself.
Cindy wondered what her other two sons might say about this latest event. What if she had three babies with all 3 of them? Anyway she'd have to wait another year before thinking about that.
"Johnny...I was just thinking about Adam and Jeff. Don't tell them about...what just happened. I want us to have the best foursome ever. We can tell them afterwards."