Birthday Bumps (Part 2)

[Part 1 here](https://www.reddit.com/r/BallbustingStories/comments/18bnbg1/birthday_bumps_part_1/?utm_source=share&utm_medium=web2x&context=3)

Maddie hesitated. She wasn't sure what to do. She didn't want to kick her dad in the balls. Kicking her annoying brother was one thing but she loved her dad and she didn't want him to be mad at her. She remained sitting on Dan.

Martin tried to sit up "wait girls, what do you mean you need proof? Stop, I can't let you do this!" Kayla rushed over to him and kicked him again between the legs. Martins hands had been behind him, trying to push himself into a sitting position. He fell back onto the floor.

Kayla sat on Martin so she was facing toward his crotch. Martin got a little scared. Kayla was ruthless, she took after her mother.

"No Dad, this is happening whether you like it or not. Mom is paying us $200 each to give Dan his birthday bumps and we intend to collect it." Kayla informed him.

"Why is she paying you?" Martin asked, the pain he was in reflected in his voice.

"Mom hired us to beat Dan's balls because he owes her a lot of money and won't pay it back. He's been avoiding her, otherwise she'd just do it herself. So she told us to do it when we saw him here." Kayla said.

"How much does he owe her?"

"$5000" Maddie said, standing up.

"No, $5400 now" Kayla corrected her. "She added our fee to his debt," she laughed. "So Dan is essentially paying us to beat his nuts right now!"

Dan wailed. This was so unfair! He had borrowed that money to buy a car after his employer moved to a new location that didn't have access to transit but then the money got stolen and he lost the job because he couldn't get to work and then he couldn't pay his mom back and she would not forgive his loan. He had been having a hard time finding a job ever since. An extra $400 would be even harder to pay back. Plus he'd already received more than half of his kicks and now he had to start over.

"What if I paid you $400 not to do this?" Martin asked.

"Sorry Dad, you'd have to do a lot better than that. You know how Mom is if she doesn't get her way and I don't want to get on her bad side." Maddie said apologetically.

"Plus, that wouldn't be any fun" said Kayla, slapping Martin playfully in the balls.

Martin groaned. He couldn't afford much more than $400 at the moment.

"Hurry up Maddie, lets just get this over with" Kayla said holding the phone out to her. She sat there with her hand resting on Martin's crotch, ready to slap him again if she felt him move.

Maddie took the phone and started recording. She kicked Dan in the balls. Dan whimpered much louder than before, there was no use in trying to be quiet now that they weren't trying to hide what was going on from their dad.

Martin laid there quietly, he didn't know what he could do to help the situation. He didn't want attract any attention to himself because he didn't want to be heard or seen in the video and give his ex wife the satisfaction. His erection from before had never really went away and now Kayla's hands were stimulating it. He was so embarrassed. He looked over at his daughter kicking his son in the balls and found himself getting more aroused. He looked away, gazing up at Kayla, her long hair flowing down her back as she straddled him. From behind she didn't seem like his daughter, she could be any other woman. He thought about the pain in his balls. He felt her hands resting on his crotch. He imagined some young hot pornstar sitting on him and stimulating his dick after beating his balls. He shook the thought out of his head, now was not the time for that.

"15..." Maddie counted

Kayla's weight was starting to get really uncomfortable. Martin shifted under her a bit. She felt around until she grabbed his balls through his pants and grinded her fist into his balls. Martin tensed up. It hurt a lot.

"16.."

Dan was whimpering inconsolably. It reminded Martin of some of the men in the ballbusting videos he watched. Martin squirmed from the pain of Kayla massaging her fist into his balls. He felt her pull her fist away and then punch him in the balls. He grunted and twitched.

"17"

Kayla punched Martin again. Each time she hit him her wrist would bump against his cock.

"18"

Martin trembled and squirmed under Kayla he tried to push her off. He couldn't take anymore. If she hit him again he was going to cum and that would be a very humiliating experience for him in front of his family.

Kayla felt Martin trying to push her off and she delivered five more slaps to his balls, trying to keep him in line as Maddie finished the last 2 kicks. Martin's cock erupted, spewing cum into the inside of his underwear.

"and 20" Maddie said.

Kayla quickly jumped up "and one for good luck!" she shouted cheerfully as she kicked Dan one final time.

Dan curled up in a ball, crying. Kayla took the phone from Maddie.

"Happy Birthday Dan!" She cheered, standing there filming him in his misery.

Maddie went to Martin and held her hand out to him to help him up. Martin was trying to sit up and reached out for her hand when she noticed a wet spot on his pants. "Ew gross Dad!" she said, pointing at it.

Kayla turned and looked. "OMG gross! You're such a perv!" she said kicking him in the balls again. Martin fell back onto the ground holding himself and rolling around in pain. Kayla stood there filming him. "I wonder how much mom will pay us if we give her this part of the video"

Martin felt a wave of dread. "No!" he exclaimed, gasping for breath. "I'll pay you $400 not to."