Note: This story was dynamically reformatted for online reading convenience. Henry hovered outside his parent's bedroom, waiting for the sound of the shower being turned on. His father had left and hour ago and he still had a little time before he had to go to school so he waited for his mother to start her shower. He heard the bathroom door close and then the sound of the water running through the pipes. He opened the door to the bedroom and peeked in, making sure his mother really was in the bathroom. When he was sure the coast was clear, he ran over to the clothes hamper and opened it. On top of everything were the pink panties his mother had been wearing only a few minutes ago. He reached into the hamper and took the panties out. Just touching them made his hard cock jump in his shorts. He snuck towards the door but something stopped him. He looked at the bathroom door, knowing that on the other side of that door was his mother, naked and wet. He crept over to the door and listened. He could hear the water splashing as she washed herself. The thought of her hands roaming all over her naked body was almost more than he could take. He reached down and rubbed his hard cock through his shorts, wishing it was her hand rubbing him. A wicked idea ran through his head and he felt his heart race even faster. He unbuttoned his shorts and slid them down. He pulled down his shorts, exposing his hard cock. He knew that at any second his mother could be done with her shower and walk out to find him standing there, naked, his cock in his hand. He rubbed her panties against his cock as he listened to her shower. He wrapped the panties around his cock and stroked himself. He was so involved in his fantasies about his mother he almost missed the water being turned off. His heart skipped a beat and he froze for a second that felt like an eternity. She was going to come out and find him! Grabbing his shorts, he yanked them up, pulling them over his cock that was still wrapped in his mother's panties. He stumbled and made it out the door, just before she came out of the bathroom. He ran to his bedroom and rushed inside, closing the door behind him. He sat down on his bed and tried to calm his racing heart. That had been too close. It had also been too fun. After he caught his breath, Henry pulled his shorts down and pulled his mother's panties off of his cock. He sat on the edge of his bed, his cock still standing stiffly in front of him while he held his mother's panties. He gripped his cock was stroking it when his mother knocked on his door. He dropped her panties and quickly yanked up his shorts. "Yeah?" he yelled. She opened the door and peeked her head in. "You're going to be late for school, mister," she said. "I was just going," he said, standing up and, with a flip of his foot, kicking her panties under his bed. He rushed out of his room and past his mother, hoping she wouldn't see the painful bulge in the front of his shorts. ***** Katherine watched her son rush out of the house and head for school. She shook her head at him, wondering what was going on in his head. He'd been acting weird for a couple of weeks now and she was starting to worry he might be using drugs. She stood in the hall for a long time looking at his door. She and her husband had tried their best to let him have his own space and to not violate that space but now she thought it was time to break that rule. He was going to be gone all day and, with it being her day off, she had time to snoop a little. Besides, if she didn't find anything then he was clean and he didn't have to know she'd looked. She opened his door and walked into his room. She wandered the room, peeking in his drawers and checking the contents of her closet. After fifteen minutes she hadn't found anything and was feeling much better. Maybe he was just going through some weird phase. She was walking towards his door when it hit her that she hadn't looked under his bed. She laughed at the thought of him hiding anything under there. Talk about the most obvious place! She got down and looked under his bed. She found his baseball bat and a pair of old shoes. And her panties. She reached under his bed and pulled her panties out, wondering what the hell they were doing in here. She was sure this was the same pair she'd been wearing before her shower but how had they gotten in here? She touched a spot on them and felt a cold wetness under her fingers. It took her a moment to realize what that wetness might be from. She dropped her panties on the floor and stared at them in horror. Her son had been masturbating in them! With that fact clear to her now, it explained so much. Henry had been very friendly and hanging out with her more. She'd noticed a couple of times her panties had been moved in her drawer and in the hamper. It had been Henry the whole time. Katherine sat on her son's floor, wondering what to do. It wasn't natural this attraction and, for him to be masturbating into her panties made it even worse. She sat there for a long time wondering what to do. Finally, she convinced herself that she had to be wrong. This must be some sort of mistake. She had to be wrong. All the rest of the day she thought about it and, as the day wore on, she came up with a plan to prove herself wrong. ***** The next morning, Katherine put her plan into motion. She went into the bathroom and started the water. She closed the door of the bathroom and hurried across her bedroom to her closet. She got inside and left the door opened a crack so she could see the side of her bed and the clothes hamper. She didn't have to wait long. Henry came into her room and went directly for the hamper. He opened it and pulled out than panties she'd put on top of the other clothes. He sniffed her panties and Katherine had to clamp her hands over her mouth to cover the sound of her disgust. Henry looked at the bathroom door a couple of times before pulling down his shorts and underwear. Katherine gasped as her son stood just a few feet away, his hard cock standing stiffly out in front of him. He wrapped her panties around his cock and stroked it up and down. Katherine watched her son pleasure himself with her panties, unable to tear her eyes away from the scene in front of her. Henry suddenly stopped his stroking, put the panties in the hamper and rushed out of the room. When she heard her door close, Katherine left the closet and rushed to her bedroom door. She opened it a crack and waited. A few minutes later she watched Henry come out of the other bathroom. She closed her bedroom door and went into her bathroom, hurrying just in case Henry came back. She took a long shower, wondering how she was going to talk to Henry about this. ***** That night dinner was a tense affair. Her husband kept asking what was bugging her but she told him she just wasn't feeling too good. The whole time it took everything she had to not just grab Henry and ask him why he was doing the things he was doing. Henry went to bed and then she and Justin decided to call it a night. She stripped down to just a t-shirt and her panties and got into bed next to her husband. She thought about telling Justin what she'd found out but decided against it. He had a hard enough time with work and everything else; he didn't need to know his son's strange fetish with her panties. How many pairs of her panties had he masturbated in? Had he done it in the pair she was wearing right now. A strange tingle made its way up her spine at the thought of that. Had her son's cock touched the same place her pussy was now touching? Another tingle of excitement made its way down her spine at the thought. Her hand slid between her legs and she touched her panties. She rubbed them against her pussy, feeling how wet she was getting and wondering what was wrong with her. Why were these thought about her son turning her on so badly? She turned over and cuddled against her husband. He turned over and laid on his back, letting her rest against his side. "Katherine, what's bugging you, sweetie?" He asked. "Nothing," she mumbled, running her hands across his chest. "There is to something," Justin said, running his hand through her hair. "I wish you'd tell me." How could she tell him? What words do you use to tell your husband that your son is masturbating in your underwear? Thinking of this morning and her panties touching Henry's cock made her shiver. Her hand slipped down Justin's chest and stomach and onto the lump in his shorts. He let out a low moan as she touched him and she felt his cock stir at her touch. She slid her hand under his shorts and rubbed his cock, feeling it grow hard in her hand. "Well, whatever's not bugging you is okay with me," he managed to say. If he only knew what he'd just said. Was it okay for her to be turned on by the sight of her son with her panties? She ground herself against her husband, feeling her wet panties touching her pussy and knowing, absolutely knowing, her son's cock had touched them. She let go of Justin's cock just long enough to pull her panties off and straddle him. She held his cock up and settled her pussy down onto it. She eased lower and lower, taking him deep into her very wet pussy. He let out a loud moan and grabbed her hips, thrusting up into her. Katherine groaned in pleasure as she rode her husband's hard cock. She reached between her legs and rubbed her clit as she rode her husband harder. Her entire body felt like it was on fire, every nerve screaming as his cock slid in and out of her. It was so wrong. She was turned on by her son and she was taking that desire and using it on her husband. She knew it was wrong and she didn't care, all she cared about was the feeling of his cock inside her. Even with the intense pleasure of his cock ramming deep into her pussy, her mind wandered to this morning. She'd seen her son's hard cock as he touched himself with her panties. She was sure he'd been fantasizing as well. Had he been thinking about her? Had he been thinking of his cock buried deep in his own mother's pussy? With those thoughts swirling in her head, she rode Justin's cock harder. Is that what he wanted? To be under her, fucking her, shoving his cock into his own mother's pussy. A wave of pleasure crashed through her and Katherine came, riding her husband's cock but thinking of her son's. The orgasm was so intense she had to bite her lip to keep from screaming. A couple of second later she felt Justin's cock shudder as he came deep inside her. She'd gotten her tubes tied after having Henry so she had no worried about getting pregnant from her husband cumming inside her. Or her son. That thought set off another orgasm and she ground herself against Justin, feeling his cock pressed deep inside her pussy. When the orgasm passed, she lay down on top of Justin, catching her breath. "Holy shit, honey," Justin whispered. "Whatever's bugging you, you have my permission to let it bug you any time you want! That was amazing!" He had no idea. He didn't know she'd been thinking of their son. He didn't know he'd just given her permission to do it more. She lay there for a while, wonder what to do next.