She lies back so the doorway gets a full view of her spread pussy. "Eat me out and make me wet." This is what you wanted to see, son? Well here it is, and this is what it sounds like when I'm experiencing sexual ecstasy. Jacob unfortunately is pretty bad at oral sex, maybe it's because Sandy's not all there and this is partially a show, but no matter, she's going to accentuate the pleasure as best she can. "Oh John, that's good." Jacob notices Sandy got his name wrong, but since he's busy tonguing Sandy's clitoris decides not to say anything about it. He's trying to find the right rhythm here but it's not working. No matter, he can feel Sandy's pussy lips loosen and moisten on his chin. She's ready for him.
John is listening intently on his knees with his back against the wall in the hallway trying to look small. He can see but the angle is all wrong, too low. It's frustrating him so he decides to focus on what he can sense, namely the sounds. He wants so badly to hear his mom orgasm. He wants to cum at the same time. He strokes slowly, so as not to get too excited. He is so excited but just desperately doesn't want to come prematurely, he hopes Jakob is up to the task of getting his mom off.
With Sandy ready to get fucked, Jacob get up off his knees and enters her. He pounds away without much concern for a proper rhythm to excite Sandy. Sandy tells him to slow down, and at least he's willing to listen to her. Jacob tries a new rhythm and it starts to feel good so Sandy says "yes like that keep doing that." It's a bit slower than Jacob would like but he figures maybe he'll last longer. The sensuality heightens, and Sandy starts to get seriously aroused. Even though the physical sensation is there, emotionally without the connection to her partner Sandy realizes, it's not going to happen. Time to end this. "Ok, fuck me, fuck me John fuck me hard."
Jacob, given the green light just starts pounding away and comes within 20 seconds, Sandy not particularly close. "Was it good for you?" Jakob asks. "Yeah but I want to come too, let me get something."
"Oh you didn't come?" Sandy rolls her eyes and goes to grab her vibrator. "I want you to tease my nipples, and play with my body." Sandy puts the vibrator against her clitoris and allows John to play with her body. She closes her eyes and begins imagining her son watching her, starts imagining her son joining in, her son tonguing her clit, and then finally entering her. It's too much and she has a tremendous orgasm.
She and John come at the exact same time. John was disciplined. His load spilled into his other hand, to avoid it dropping on the floor, he slowly gets up and heads to the bathroom to wash himself.
Jacob lies in bed with Sandy. Sandy tells him he doesn't have to stay if he doesn't want to. Jacob thinks she's maybe playing a game, but after she insists realizes that no she actually doesn't want him there. He says some pleasantries and good night, figuring that it's probably not going to go anywhere, but maybe he can give a call if he's feeling horny in a few weeks.
Sandy goes into the shower, cleans up. She can no longer pretend that this is a one way fixation. Her son doesn't just want her but she wants him and she now knows that fact with certainty. She's seducing her own son. It's sick. She feels ashamed, the shame is overpowering with the joy of orgasm now long gone. She wants him so badly and he wants her so badly but it's just wrong. She will destroy his life if they continue down this path. He's got to go to college, find a girl his age, a girl even better than she is, make love to her, enjoy a real healthy sexual relationship. Get married, have children. This perverted thing they have going will send him down a path to misery. What future can this possibly have? A son staying at home, not going to college and having a love affair with his own mother. He will grow to hate her. He will grow to hate what she's turning him into. There's worse than no future here, there's a terrible future here. One of her son's arrested development and bitter resentment over it one day.
Sandy goes to her son's bedroom. The door is ajar, the light is off. She goes to look at him. He pretends to be sleeping. She gives him a kiss on the cheek and closes the door.