Sklylight17 suggested scenario. Enjoy!

BAllBUSTING BETWEEN SOCCER PLAYERS

Mia was still training on penalties. Her team mates were already under the shower. She wasn't the star of the team. No, not at all. She was one of the weaker and she hated that. Every day after the training she spent an half hour to improve her skills with the balls.
Her coach and her mates admired her for her caparbiety.
Kick after kick she tried her best to become a better player.

Max was watching at Mia from the sideline. He was a goalkeeper and one of the best player of his team. He was there to have a talk with his coach and he stopped by when he saw Mia training alone.
Mia was a beautiful girl fit and toned. Her nikkname among the team was Tobin due to her resemblance with Tobin heath.

"Hey Tobin! Better if you kick the ball harder!" Max shouted to Mia.
The girl turned towards him. She saw him standing there with his track suit on an a smirk on the face. She knew he called her "Tobin" just to make fun of her.

"I'd better to kick your balls jerk" Mia thought. Max was an handsome boy. Mia didn't have a crush on him but she surely didn't mind to spend some time with an hot boy. "Why don't you help me instead of standing there. I need a goolkeer right now" she said loudly to him. Max smiled and ran towards the net. Max had a secret crush on Mia. To be honest he had a secret crush on every single female player. The reason? He was a masochist. He used to daydream about girls kicking him in the balls. He always fell in love when he saw a girl in cleats.

He liked footballers but with Mia was different. Not only she was a football player she was even a beautiful girl. Max like her a little more than the others. "Come on Tobin! show me what you got!" He said to Mia.

The girl tried her best to score but Max saved every shoot. "Wow your worst than i thought!" Mia was really pissed off by Max. She really wished she had a chance to smash her foot on his balls.

"I see why you train more than the others." Max jumped and grabbed the crossbar flaunting his skills to Mia. "Oh shut up! Stupid show off!" Mia kicked another ball towards the net.

Max didn't had the time to react that the ball hit him right on his balls!
"Ouch!" Max bended over holding his crotch. "Oh my good!" Mia ran towards him. "I'm sorry. Did i hurt you?" She was really concerned for Max.

With his knees still bended Max raised his eyes to look Mia. "I saved this one too!" He exclaimed smiling.
Mia pushed him on his shoulders and he fallen on the grass. "You jerk! I'm glad i hit your balls!" For a moment Mia felt like she wanted to hit him again.
Max's heat skipped when he her the words "glad", "hit", and "balls" said by Mia.

There was an occasion to make something happen. Max didn't want to change subject. His heart was beating fast. "I bet you aimed them!" He said getting up on his feet.
"I didn't! But i'm gonna aim them if you keep on mocking me!"

Max began to feel excited by the conversation. "I bet you would love to kick me in the balls!"

"And i bet you wouldn't tease me anymore if i kicked you down there!" Mia pointed out with a grin.

Max mind was running. In that moment he only whished to say "then i let you kick me in the balls" but that was too odd, too embarrassing. He didn't want to admit he had a thing for kicks in the balls. But he was a lucky guy. Actually the most lucky in the world.

"Why don't we make a deal?" Mia had an idea. She thought it was a great idea. " i'll kick ten penalties. If i score five goals i can kick your balls as many times as i want. If you block six shoots i'll gonna show you my boobs!" Mia really whished to teach him a lesson and she didn't mind to expose her breast to an handsome boy like Max. She was even excited by the idea. It was a win/win for her.

Max had his eyes open wide. He felt a tingle in his crotch. It was a win/win for him. "I'm in!" He said hiding his excitement and positioned himself on the line. Mia didn't hide the fact she was excited. She had a mischievous smile on her face.

The ball was in position for the penalty shot. In that moment Max panicked. He didn't know what to do. Let her score or block any single shoot like he did before?

Mia kicked the ball and she scored. Max didn't even move. He was out of his mind. It was impossible for him to focus on the penalties shot.
"Ah! First goal! Prepare your balls for my foot!" Mia mocked Max.

Max tried to save the next shoot but again Mia scored. He didn't let her score on purpose. He was too aroused by the situation. He began to grow an erection. That was the end. Mia scored another two time.

"Ahaha something wrong Max?" Mia couldn't believe what was happening. Max was both aroused and embarrassed. "It seems like you want me to kick you in the balls" Mia said to tease him.

She took the ball and said "imagine the ball is your manhood!" She positioned the ball and kicked. Max almost block the shoot but Mia scored for the last time.

"Five on five! I guess your balls are mine!" For Max was a dream came true. "Fine! You can kick my balls. A deal is a deal. I let you win to help you gain some self esteem. Next time i won't be so gentle."

Mia approached him "Oh so kind from you! I'm afraid i won't be so gentle with your nuts. Time to teach you to not make fun of a footballer. Open your legs!"

"No wait. Do you want to do that here? What if someone sees us" Max was eager the feel Mia's foot smash against is balls but he wanted a little of privacy. He had an hard on after all.
"I'm a footballer kicking balls on a football field. I guess there's nothing wrong!"
Max swallowed. He opened his legs. Mia didn't noticed his hard on. She rised her foor and kicked Max in the balls. Her cleats smashed perfectly on him. Max let out an "oooh" and went down on the field. That felt great. Her shoes were so painful and her training outfit was so exciting.

"No no big boy! Up on your feet! Remember 'as many time as i want' was the deal!"

Max remember clearly the best deal of his life. He got up and opened his legs again. "I hope this gonna help you improve your shot"
Mia didn't even listened to him and kicked again. Max jumped for the pain gritting his teeth to not yell. Mia laughed out loud at the scene. He was so funny.

Mia put her hands on Max shoulders and kneeded him quite hard on the balls. Max bended over trying his best to not cover his crotch. He didn't know any more what was pleasure and what pain. He felt an incredible mix of them.

For Mia was the first time she kicked a boy in the balls and she loved it. She walked behind Max and kicked him. This time her shin gards smashed on the target. That was tok much. Too much pain for Max. He fallen on the ground holding his balls.

Mia was excited by the scene. She needed more. But not there. She needed to be alone with Max. "I think your balls had enough for today!" She said to Max. "But remember 'as many time as i want' and i want more!" She left Max on the field and went to take a shower.

Max took some time to recover. She wanted more. That meant he probably gonna have more occasions to let Mia play with his balls. He went straight to home. He needed ten minutes alone to release the tension!