Sadistic stepdaughter

Mark was enjoying a pleasant evening when his stepdaughter Sandra stepped into the living room. At 16, she was almost the complete opposite of her mother, Mary, Mark's new wife. Whereas Mary was tall and very fit, having been a pro soccer player, Sandra was a petite girl, standing at only 5.2 ft. Their only common feature was their chest. Mary owned the most impressive set of breasts he had ever seen, they were perfectly rounded and very perky despite their size. Sandra's were nearly as big but looked even larger on her petite frame and she seemed to like flaunting them at every occasion.


Tonight was clearly one of these as she only wore a flimsy tank top which left the bottom of her breasts bare, leaving no doubt that she didn't wear a bra.


- "I'm going out" said Sandra while heading towards the door.


- "Wait a minute, you are not going anywhere dressed like that ! Besides your mother isn't here and she told me you weren't allowed to go out this week" said Mark while putting himself between the door and his step-daughter.


-"You could get attacked by a pervert !"


- "What's wrong with the way I dress ?" asked Sandra while pulling a little on her top, which made her breasts move in a wonderfully enticing way.


- "And I can take care of myself !"


Mark laughed.


- "Look, you're only about 5 feet and not very strong, if a guy manage to catch you alone he won't have any trouble doing to you whatever he wants !" said Mark while trying very hard not to let his eyes stray towards her chest.


- "Ok, stop me then ! If you think it would be so easy" said Sandra while moving past Mark to open the door.


Mark caught her by the arm and pulled sharply to take her away from the door. Sandra, however, didn't seem fazed by his rough treatment and, instead of the fear he expected, just smiled and took a step back. She then sent her leg flying in an elegant arc between his legs, her shin connecting solidly with his balls.
In the worst pain of his life, despite fighting it with all his might,Mark could only slowly fall to the floor, and quickly adopted the classic foetal position of a man stricken in his most vital place.


- "See, I told you I could take care of myself" giggled Sandra.


- "And I didn't even kick that hard ! You should ask John if you want to know how it feels like, he cried like a baby" said his step-daughter proudly.


Mark couldn't help but being surprised, his 17 years old son stood at 6,3 ft and had been into karate for several years. There surely was no way that he had been reduced to tears by his step-sister who was almost half his size.


Sandra  must have sensed his disbelief because she added :


- "Remember how he was limping last week ? He said he pulled a muscle while practicing karate. Well in fact, he got a little too impressed with these" , said Sandra while lifting her large breasts a little with her hands, which allowed him to see her chest almost entirely from his position on the floor, and caused a painful stirring in his very sore groin.


- "I don't mind looking, but touching is something else. I couldn't let my step-brother just grope me like that. I kicked him so hard his feet almost left the floor !" laughed Sandra.


Mark was becoming very angry. He couldn't let her get away with humiliating his son and himself like that. He slowly got up and glared threateningly at his stepdaughter :


-" Do you think I'll let you get away with that ! You won't get me by surprise again, I'm going to spank..." Mark's voice was cut abruptly when the hard tip of his step-daughter booted foot slammed in his balls, smashing his testicles against his pubic bone. This time the movement of her leg had been a blur, leaving him no time to react. His eyes bulged and he fell on the ground in a heap, writhing in agony and making gurgling noises.


- "Men, they never learn !" sighed Sandra, "Well, now you know how a hard one feel ! I did you a service anyway, now you know what will happen if you make mum angry. Her legs are stronger than mine, and she always kick full force !"


- "Oh and I wouldn't tell mum about what happened if I were you" she added to the still writhing form of her step-father, "I could get grounded but she will bust your balls SOOO hard for not managing to keep me from going out" said Sandra, giggling.


She suddenly stopped, smiling.


- "Oh, but it's good blackmailing material: I just got a good idea ! From now on, you do everything I say or I'll be talking to mom. An if you think your balls hurt, wait for mum to begin to bust them ! Dad's were always so sore, he walked cross-legged" added Sandra with a smirk.


Mark couldn't believe what he was hearing ! But if his petite step-daughter could hurt his testicles like that, he dreaded what his new wife killer legs would be able to do ! He probably couldn't take much more abuse than that.


- "OK, let's seal the deal ! I need to know that you are ready to do whatever I say ! Get on your knees and show me your nuts." said Sandra with a determined glint in her eyes.


- "Are you crazy ! I'm not showing you my balls!" shouted Mark in a still slightly high pitched voice.


- "If you don't do it, I'm gonna kick those balls again ! Twice !"


Mark went blank with fear at the idea of so much more abuse to his already hurting testicles. He slowly got up to his knees, fighting against the nausea that threatened to make him throw up and took his already swelling nuts out of his pants.


Sandra giggled and quickly snapped some pics with her phone.


Mark knew he was doomed now. He couldn't believe he had been so stupid, but the idea of more ball abuse had frightened him out of his wits.


- "Haha, they're so red ! Do they hurt a lot ?"


Mark just groaned.


And then cried in agony as the booted foot of his stepdaughter impacted his testicles for the third time of the evening, putting even her second kick to shame.


- "And now ?" asked Sandra giggling while leaving by the front-door. 


Mark was puking on the floor when she closed the door, his balls sending agonizing pain waves radiating through his body.