Many thanks to Nadia for editing and improving this.
*
As they drove home, Kate was confused and thought about the proposal from Dr. Wood. Her voice echoed in her mind, "Kate, I plan to let him fuck you!" She was a bit shocked, but at the same time she was very excited by that statement. She was wondering if it was the right way to help Erik. Should she obey Dr. Wood? Dr. Wood was someone whom Kate believed in and respected. Erik's question interrupted her thinking.
"Mom, are you going to work today?"
"No, I took the day off."
"Excellent! We'll have the whole day just for us." He was very cheerful and happy and Kate had to admit that Dr. Wood was right and that her therapy was evidently working well.
When they arrived home, Erik began to undress immediately and without any shame. His semi-erect cock jumped out of his underwear.
"Oh horny boy, you need relief, don't you?" Kate asked provocatively.
"Yes mom, I do," he answered proudly. He did not hide that he enjoyed the sex games with his mom.
She came over to him and took off his T-shirt. Now Erik was completely naked. She kissed him gently on the cheek. Her hands caressed his face, neck, shoulders and chest. She enjoyed the firmness of his body while she realized that this was a real man in front of her.
"Mom, can I see your tits again?"
Kate paused for a second. She was a little surprised with his immediate question.
"Of course honey," she replied meekly.
He did not wait for her and started unbuttoning her blouse. Soon it fell open, revealing a thin and sexy bra.
"Wow mom, you are so hot," Erik exclaimed. "Can I touch them, mom?" asked Erik pleadingly.
"Yes," she gasped and blushed. "It's something we've already done for the doctor," she thought.
He took her breasts out of her bra and squeezed them some more. Kate moaned with pleasure and opened her eyes wide but she didn't move. Erik realized that she surrendered and without questions he took one of her breasts into his mouth. Her body trembled spontaneously and her moans increased as he sucked on one oversensitive nipple and played with the other. Her hands instinctively grasped his head, bringing him deeper into the swell of her breast.
She was horny and the lack of sex had left her utterly frustrated. "Oh, I'm not going to be able to stop him..." she thought. Finally, Kate gathered her strength and finally spoke up. "Please, honey... that's enough. Let me satisfy your needs."
Then, she lowered herself to her knees in front of him and there was a very thick, long, hard cock, ready for action. She was shocked to find her pussy drooling heavily and pulsing in her panties as she thought about how it would feel to have Erik thrusting his big hard cock into her meaty pussy, satisfying her wanton needs. Now she was sure that she also needed a good, hard, long fuck.
She put her hands on his hips and opened her mouth in the shape of an "O" as wide as she could. Without moving her head, she lightly pulled his ass forward. The hugely swollen head of her son's prick penetrated her warm mouth. Erik groaned out his pleasure when he felt his cock-head slide into his mom's hot, wet, and silky smooth mouth. Then, she pushed his hips and his cock-head plopped out of her mouth. Quickly, she pulled his hips forward again and now his cock penetrated her mouth a bit deeper.
She continued to rhythmically push forward and back on his hips and gradually she let his giant, throbbing cock penetrate her mouth inch after inch. Reflexively, he began to wiggle his hips back and forth in her mouth each time deeper and deeper. Erik looked down at her and he saw her cheeks were expanding outward from his fat cock thrusting in and out. He groaned when he realized that he was actually fucking the mouth of his beautiful, horny mom. She moaned low and lustily and relaxed her throat to receive his big cock as deep as possible.
"Ohhhhh, yessss!" Erik groaned as he thrust his cock deep in his mom's throat. He could feel her throat stretch to accommodate the swelling of the head of his cock. Kate moved her tongue down to flick gently over his balls while her throat tightened and loosened around him.
He thrust deep again and again. Finally, Kate felt him exploding in her mouth and he shot a big load of his hot, slick semen down the back of her mouth and into her throat. His orgasm was so intense, his knees got weak and he had to hold on to her head.
"Ooohhh...mmmm..." Kate moaned loudly as her control loosened. She moaned in ecstasy, her mouth was overflowing with Erik's hot thick sperm and she hungrily tried to swallow all of it. Erik continued to fuck her mouth gently until his hard-on went soft in her mouth.
"Oh, mom, that was great!" Erik sighed. "Can we do this again later...please?"
Kate finally let go of his cock and stood up. After his furious mouth-fucking, her whole body was absolutely glowing with lust. She was breathing heavily and her head was spinning. One thought formed in Kate's dazed mind, "fuck that beautiful cock as soon as possible."
"Mom, can we do this again..." he repeated pleadingly. "That was soooo good!"
"Would you like that?" she asked, her voice husky with arousal.
"Yes mom, it felt so incredibly good."
"Ok, we can do that again, honey! And more..." She kissed him gently on the cheek. Then, she took her blouse and bra and went to his room.
Erik enjoyed seeing her naked, heavy breasts which swayed as she walked.
**
Kate was sure she could not wait any more. She called her boss and told him that she need some days off. Then, she called Dr. Wood.
"Hi, Kate speaking." Kate said uncertainly.
"Ooh Kate, how are you?" Dr. Wood was surprised. She didn't expect that Kate would call so soon.
"Err, I am fine. I thought ... about your proposal, and..."
"Did you make a decision, darling?" Dr. Wood asked softly.
"Yes, I think ... I have to help him. I wish that his self-confidence increases." She said to cover up her own needs.
"Of course Kate, are you ready to let him fuck you?" Dr. Wood asked directly.
"Yes, I am ready," Kate replied meekly.
"Bravo Kate!" She was pleasantly surprised by Kate's quick decision. Now, she was absolutely sure that Kate needed a good fuck and a big cock badly.
"But... err... can you assist me ... you know ... the first time?"
"Of course, Kate! I am here to help you. Now it is 2 p.m. I'll be there in an hour because I want to have all afternoon for us and I want to have enough time for your first fucking. I want to teach Erik slowly how to fuck you."
"Yes, yes..." Although she was not expecting that the doctor would come so soon, Kate agreed without protest. They ended the conversation and Kate went to take a shower. Then, she put on only small panties and a short bathrobe without a bra. The crotch of her thin panties was not quite wide enough to cover all of her femininity, which looked incredible.
Her bathrobe was so short that it barely covered her round ass and her fully shaped thighs were completely exposed. The deep neckline revealed most of her large breasts. Kate realized that she now enjoyed wearing sexy clothes and flaunting her outrageous femininity and sensuality. When she walked into the living room, Erik was sitting naked and watching TV.
He saw her and cried out, "Wow mom, you are ... so sexy".
