“Aren’t you going to congratulate me Claudia? Or at least gloat? It was your making me study that got me an A.”

Claudia bit her lip nervously and nodded tersely before getting out of the car and hurrying to the door. Ainsley frowned and followed after.

“What’s wrong, babe?” Ainsley asked as she fished the key out of her pocket.

“Nothing.”

But Ainsley knew better, she had seen this expression on her friend’s face before. “Do you have to pee?” she asked. “It’s okay, you can let it go.”

Claudia shook her head. “Just open the door, Ainsley.”

Instead, Ainsley reached out and put her hand on Claudia’s bottom, then squeezed. “You’re not wearing your diaper, are you?”

“Ainsley, please,” Claudia moaned. “You said I didn’t have to wear it at school.”

“But you said you did,” Ainsley countered.

“Not when I have swim class,” replied Claudia. “Now open up.”

“You’re supposed to put it back on afterwards.” Ainsley squeezed Claudia’s bum a little tighter.

A tear escaped Claudia’s eye and she gave a small shrug. “I... I forgot.”

Ainsley smacked Claudia’s bottom sharply. “You’re in trouble, baby.” The shorter girl opened the front door to the house and propelled Claudia in with another hefty spank. Claudia began to cry as with one hand Ainsley steered her up the stairs and to the bathroom and with the other, continued to spank her.

“I’m very disappointed,” Ainsley scolded. “You should know better.”

“I know, I know,” Claudia moaned. “Owie! I’m sorry, don’t - ow! - spank me any mo-owie!”

Once in the bathroom, Ainsley jerked Claudia’s jeans down, then her panties, gave her one last stinger, and sat her on the toilet. Claudia sniffled and sighed with relief at the same time, allowing herself to relax and release the pressure. Ainsley sat down on the edge of the bath tub, still giving Claudia a stern look.

“I’m really sorry,” Claudia tried again.

“I...” but Ainsley paused. “I have something to tell you, and I think you’re going to be mad at me.”

Claudia raised her eyebrows. “What?”

“I... I had more than one test last Friday. I had a chemistry test too.”

“You did?” It was Claudia’s turn to frown. “Why didn’t you tell me?”

“Because I didn’t want you to make me study for that too,” mumbled Ainsley.

Claudia sighed. “I see.”

There was silence between the two for a while. Finally Ainsley stood up. “You done, babe?”

Claudia nodded. Slipping out of her shoes and bunched up pants, Claudia let Ainsley wipe her clean and powder her dry. Then, gathering the clothes, they went to Ainsley’s room.

“Let me see the test,” Claudia demanded. Silently Ainsley handed it over. As Claudia went over the test she ‘tsked’ angrily.

“I could have helped you with this.”

“I know.”

With a sigh Claudia sat down on the bed, Ainsley joining her soon after. “So, now what?” Ainsley asked.

Claudia shrugged. “I think we both earned a spanking today.”

Ainsley nodded.

“So, we both get spanked.”

“But how do we decide who goes first without it being unfair?”

Claudia looked thoughtful. “I think we’ll have to get it at the same time.”

“How?”

The red haired girl stood up and took off the rest of her clothes, folding them and setting them on the bed with the others. Then she did the same for Ainsley who did not object and in fact enjoyed being undressed by her friend. Then Claudia had the two of them stand facing each other. She put her left hand around Ainsley’s waist, pulling the girl close to her and had Ainsley do the same. So secured, Claudia put her hand on Ainsley’s bare, quivering bottom. Ainsley followed suit.

“Now,” said Claudia, “We can spank each other at the same time.”

“I see.”

“Are you ready?” Claudia asked nervously.

Ainsley cleared her throat nervously. “I guess so.”

Each girl raised her hand. Then, unlikely though it may be, each girl smacked the other at the same time. They both cried out and pulled the other tight with their left hand while at the same time raising their right to deliver another spank. As the spanking continued the spanks were not delivered simultaneously as that first coincidence but they were delivered hard and fast. Each smack coming harder than the last as both girls punished the other for their transgression. As each spank landed the smacked girl was hold tighter to her spanker. Ainsley, being the shorter of the two, rested her head on her friend’s nicely developing breasts, her tears sliding down her cheeks to dampen the cushioning chest. Her own small breasts pressed against Claudia’s tummy and she could feel her nipples hardening at their closeness despite the harsh smacking she was justifiably receiving. Or perhaps, in part, because of it.

After nearly three minutes of spanking, hands were becoming as sore as bottoms and exhaustion won out. First Ainsley and then Claudia felt their knees give out and they collapsed to the floor in a heap. Claudia found that she was sweating heavily from the exertion.

The girls held to each other, lying on the carpet and crying in each others arms for some time. When the tears finally ran their course, Ainsley got to her feet.

“Come on, babe, let’s get you a diaper.”

Soon Claudia was lying on her back, allowing the now tender touch of Ainsley to dress her in the security of the cloth diaper. With a sigh, Claudia sat up when it was done. Ainsley dressed herself in a pair of bright red panties. Claudia had to giggle at the irony. They sat next to each other on the bed.

“I love you, babe. You know that?” asked Ainsley, giving her friend a hug.

“I love you too.”