Anna thinks it over

Anna went straight to her bedroom, rubbing herself through her sweatpants with the boxing gloves still on. When she got there, she collapsed onto her bed with a moan. She lay on her stomach, frantically unlacing one glove with her teeth while squirming and trying to get some friction against the mattress.

While she struggled with the glove, her mind was consumed with thoughts of boxing her brother. His **** to engage in the match at all. His caution at the beginning of it. The weakness of his initial jabs--some of them had hit her, but since he was always sort of on the retreat, they weren't that forceful and she wasn't that hurt by them. The sweat on his forehead that had appeared somehow, before Anna was even slightly winded.

She finally got a glove off and threw it to the side, then she lifted her hips from the bed so she was in a semi kneeling position and instantly plunged her fingers down under the waistband of her sweatpants, into her panties, and deep into her pussy. Anna groaned as she reached a new level of arousal thinking about the match. She was holding her front half up with one slender arm, and now she let herself collapse, still on her knees, her butt in the air and her face buried in the pillow, as she prepared for the screaming orgasm that awaited her in just a few moments.

She thought of her first big punch, the one he almost slipped, the one that barely hit him but still dazed him, and then made him angry. The big, clumsy punches she dodged. And the final punch, the uppercut she threw just the way he taught her, putting her whole body into it, feeling the tension from the balls of her feet up through her legs and hips, down her arms to her unexpectedly strong fists. She'd hit him so hard it seemed like it rattled his brain, and then he was out! She thought about her mom shouting "Did you REALLY just get knocked the fuck out by your little sister?" Anna normally hated being called the little sister. At nearly 19, she was only 9 months younger than Billy, and considerably more mature. After all, she was the one who was currently getting paid to study at a French university. And Billy just lived at home, went to local college, and boxed…apparently not too well. But in this context, "little sister" just added to his humiliation at her hands, and it turned her on extra.

Anna was possibly more turned on than ever before, thinking about all this. She was biting the pillow and moaning, her body in a yoga position with her hips up in the air, her tank top riding up her back and catching just below her breasts. Anna was a feminist and an intellectual, and the intellectual appeal of beating someone at their own game, combined with the feminist appeal of a woman beating a man, combined with the surprising new athleticism she was discovering in herself, fulfilled brand new kinks she'd never considered before, and had brought her to a 9 out of 10 faster and harder than any fantasy she'd ever had…and this was real.

But there was a problem. The facts didn't add up. This wouldn't have bothered some people, but Anna was smart, and she was trained to analyze, criticize, and question everything. She couldn't turn those habits off just because she was currently fingerblasting herself like a dumb slut. And she couldn't cum until she had answered her own questions.

First of all, it made no sense that Billy had been scared even at the beginning of the fight. Anna could only remember a couple times she ever beat Billy in an athletic contest, and those times were mostly luck. And boxing was so physical that Billy's size advantage should have been decisive, that's why she was initially scared to partake. But it was Billy who was timid right from the start, and there was no reason for him to have felt that way.

Second, her mom's encouragement of the match made no sense. She'd rarely **** them to compete before, and knowing Anna's bookish tendencies, Heather had never **** her to do sports. She had seemed surprised that Anna knocked Billy out, but what was she expecting? If she expected Billy to win, as he should have, did that mean she wanted to see Anna get beat up? That didn't seem right.

Finally, the knockout punch itself…she knew she had put all her strength into it, but it still didn't seem like it could knock out a trained boxer. Was it luck? Did it catch Billy just the wrong way? She was fit, but not that strong, and it seemed crazy she could knock Billy out when to her knowledge, he'd never been knocked out before.

Anna let out something between a sexual moan and a frustrated growl. She was fingering herself and rubbing her clit as well as she knew how, but she knew she would never cum while so distracted with questions. This would never work…she had to know the truth. Anna wiped off her hand on her sweatpants, then peeled them off along with her panties. Next came the tank top, which she shrugged over her head. She walked into her attached bathroom and stared at herself in the mirror, completely naked except for the one boxing glove still on her hand. She unlaced it thoughtfully, then cleaned herself off. She put on a low-cut white t-shirt and a pair of tiny navy blue cotton shorts. She admired her body, tried to see it the way Billy apparently saw it. She had thought of herself as pretty, but never dangerous.

Then she padded down the hall to Billy's room. She tried the door and found it open. She snuck into his dark room and went right up to his bed. He was asleep on his back, the covers pulled up to his chin and his arms at his sides. Anna got on the bed and swung one leg over his stomach, sliding into a straddling position with her hands on his shoulders.

Billy woke up instantly. "Anna, what--?" he muttered before she placed one hand on his mouth, muffling his speech.

She moved her straddle to his upper chest, using her calves to pin his arms to his sides. He started struggling to free himself, but she had already given herself a huge advantage by sitting right on him, and his arms and legs were helpless because of the sheets. He bridged his back, almost bucking her off. She noticed her breasts bouncing as he tried to throw her off--she had to be giving him quite a show. She placed her free hand behind his head, pulling his head towards her and forcing him to collapse back onto his back. It also had the side effect of scooting her a few inches higher on his chest, now only six inches from his neck.

He tried to say something, and Anna shook her head. She let go of his neck and slapped him lightly across the face. "Shush!" she whispered sharply. His eyes widened, and he looked terrified. More terrified than he should be, she thought. Another weird thing.

"Was that boxing match for real?" she asked him.

"What do you mean?" he asked when she took her hand from his mouth.

"I mean, I thought you were supposed to be good at boxing, but I took you down. What happened? How did I knock you out" she asked.

Anna could see the humiliation on his face, mixed with something else she couldn't identify. What was going on in his head?