You really need to read the entire series for this to make sense. It starts with Jimmy's Plan and goes to Chapters 2 through 7.
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Mary's brother had his 18th birthday two weeks earlier. Unable to get him a gift, she only gave him a card with the promise of a gift to come. Until this very moment she had, had no idea what she would get him! Now she knew…it would be Sylvia, Jimmy and Joey's mother!! What a great idea!! She would give her brother Terry the present of presents, the present of his life!!
Sylvia returned from shopping and heard the shower in the basement running when she came in. "Oh!!" she thought "I wonder if Jimmy's taking a shower, I have half a mind to go down there scrub his back…..Can't do that, that's what got me in trouble earlier!!" Instead she put the groceries down on the table and started putting them away. When she finished putting everything away she went to her bedroom to change into something more comfortable. One of her old housedresses would be just fine.
The door to Jimmy's room was opened just a crack. She could see Jimmy laying on his side masturbating!! The view of his fully naked lean body stretched out made her pussy instantly wet!! She was about to enter his room when she caught herself. "If Jimmy's here, who's in the basement showering??" Sylvia must have made a noise because Jimmy looked up and saw his mother standing in the hallway watching him. In dire need of relief he gestured to her to come in!! At the very least he wanted a blowjob!! Sylvia couldn't ignore him so she pushed the door open enough for her to enter and said, "We can't do anything now. Do you know who's in the basement?"
"That little bitch Mary" Jimmy spit!! "Oh my God, She can't catch me in your room with you like this!!" Sylvia exclaimed. "Wait, wait" said Jimmy, "We can hear the shower, when she shuts it off you can go across to your room!" He would do and say anything at this time to get some relief!!
Sylvia was caught up in the erotic excitement of the moment. The opportunity to once again perform a taboo act on her son and the chance of getting caught by her other son's girlfriend, was overpowering!! She gave a nervous look over her shoulder and stepped completely into Jimmy's room, leaving the door cracked just a bit so she could hear if anyone was coming.
Sylvia sat on the bed next to Jimmy, bent over, grabbed his cock in her hand and devoured it with her eager mouth!! She loved his cock, so hard, so long and it throbbed with anticipation of her expertise!! Jimmy, head propped up on the pillow watched his cock slide in and out of his mother's mouth. It was funny how as his cock disappeared her soft lips folded between her teeth and his member and then as his cock reappeared her lips also reappeared drawing out their full length as they reached the purple now swollen head!! He thought to himself, "She really knows her stuff!!" Taking full advantage of her preoccupation with his cock, Jimmy reached down and stock his hands down the front of his mother's dress; found her nipples and began to message her large tits while he twisted gently on the nipples. Sylvia moaned with delight, increasing the speed of her up and down movements on his huge member. Both Jimmy and Sylvia were lost in this forbidden interaction and did not hear the shower turn off.
Mary stepped out of the shower, hearing some noise from upstairs she dried off quickly and put a robe. She giggled to herself; "I'll bet Jimmy is up there jacking-off after what I put him through. I need to play him a little more!!"
When she reached the top of the stairs, saw the kitchen table with empty grocery bags on top, she knew immediately that Sylvia had returned. She walked down the hall toward Jimmy's room and noticed the door was ajar. Standing back about five or six feet from the door she could see Sylvia giving Jimmy one hell of a blowjob and Jimmy didn't have his hands in the cookie jar but he was fully into playing with her tits. Being very quite she decided to watch.