He decided that for now, he was more interested in Cecelia. Behind her scruffy looks, there was an always helpful and cheering girl. And she didn't look so bad too. Like most black girls, she had a nice booty, though it could be nicer, considering Zoey's powerful thighs...
- So... Cecelia, you made some... What, cupcakes?
- Yes! You want one?
- Yeah sure!
Cecelia handed a chocolate cupcake to Arthur who ate it right away. Damn, it was quite good! Maybe he could make a few statement about it on the dictaphone... But for now, he said:
"They're good! I'm gonna keep them for later, now we're gonna focus on today's lesson. But come here Cecelia so I can thank you properly!"
Cecelia smiled and stood up, and proudly leaned forward to show her curvy rear hidden behind her tight jeans. That's when Arthur... Snapped his right fingers.
"Heep!"
Cecelia let out a scream, and straightened her body to put her hands on her butt. It was getting bigger, or so she thought... And she was right! It was getting bigger in front of Arthur's eyes, who saw this tantalizing flesh pushing forward the fabric of her jeans, creaking...
- Is something wrong Cecelia?
- My butt, it's... I... Nevermind, I thought I felt something.
- Your butt is nice, like usual!
- Come on, just slap it, don't talk about my butt like that...
Rin interfered:
- Yeah, you like it when your ass is smacked!
- Rin, come on, don't say that! I just want be helpful, and I can't help it if people want to thank me...
No... Indeed you can't. Arthur thought of something, and recorded/
"Cecelia really love getting her butt slapped. Her butt is really sensitive to... Sexual arousal. She can't control it, she doesn't show it to anyone, but she always wants her ass to be touched!"
Like he wanted, the girls didn't notice him recording anything on the dictaphone. Cecelia just said:
"Come oooon, just slap it!"
She was shaking her hips in haste. Arthur raised his hand, and gave Cecelia's butt a firm slap.
"Gnnn! Th... I mean, you're welcome Arthur!"
Cecelia was biting her lip, trying not to show her arousal. She felt really ashamed. For everyone, slapping girls' butts was just a normal way to say thanks, but for her, it was just so much pleasure... Rin was right, that's why she always wanted to be helpful to everyone... But it was so hard not to show she was enjoying it! She felt so weird, slapping butts to say thanks was not at all sexual, but in her perverted mind, it was. She felt so... Abnormal! But she didn't care, she just wanted more and more slaps! She wiggled her butt, to say "you're welcome" but also to contain her excitement.
Anyway, Arthur put away the cupcakes, took out his notes, the girls were ready sitting on the couch, notebooks on the table. Tabitha was missing a pen, so Cecelia hurried to lend her one, and got her butt slapped once again by the blond girl. Arthur could clearly see the enjoyment on Cecelia's face... And he wanted to go further.
Today's lesson was about algebra but Arthur wanted it to change a little. So he just said:
- Today... We're gonna talk about politeness. As in, the various way to be polite today and around the world.
- Hum, said Zoey, I thought today was about algebra?
- Well I changed it. After all, it's an important topic on your course.
Rin said "Really?" but then then the others said in unison : "Well if he says so, of course it is..." The girls trusted him no matter what! Thanks to that, he could say anything he wanted and they would believe him. Rin accepted that today's lesson changed, and so Arthur could continue.
"Ahem. Anyway, let's talk about the polite way to say thank you to girls. Have you ever find it weird that you slap a girl's ass to say thank you?"
The girls shook their head. Of course not! Arthur said so in his dictaphone that it's commonly accepted, not weird or sexual.
"So you agree that it would be weird for someone to feel... Different, about getting slapped in the ass as a thank you?"
The girls nodded. Cecelia gulped, fearing that her teacher has noticed that she was indeed liking getting her ass spanked. Just the thought of the shame that she would have if it was revealed was enough to make her feel a cold down her spine.
"So... Cecelia, will you please stand up close to me and show your butt to the other girls? I'll need you to show something."
The black girl with the weird kink stood up shyly, and felt her body shivering, she started to sweat, her heart were pouncing, but she did her best to stay calm.
"Come on, don't be nervous, I want you to show the various ways of saying thank you. So... Cecelia, I'm really grateful to you, you've been really kind to everyone, and also a good student. So you deserve many thanks. But for the sake of example, let's do an Eastern European thanks, in which you don't slap, but squish the two butt cheeks together."
Then Arthur suddenly grabbed each piece of Cecelia's bosom and squished them together. She let out a high pitched gasp, and tried to hide her arousal under laughter. The other girls laughed too. Rin said:
- Wowh, they thanks girl like that over there! That's... Something! Well, it's not hugely different but...
- Yeah... It feels a little weird too, ahah... Said Cecelia, slightly out of breath.
- Well, now you have to say "you're welcome" Eastern European style!
- And how is that...? You don't just wiggle your butt?
- You have to really lean forward, almost bring your arms on the floor, butt up in the air, and you have to rock it left and right!
Cecelia did as she was told, trusting completely her young teacher that couldn't have any other thoughts than just the joy of girls learning stuff. She showed her heavy thick butt and moved it like a sort of sexy dancer. The others giggled, Arthur smiled, put his right hand behind his back, glaring at Cecelia's glorious dancing booty...
... And snapped his fingers once more. And another!
He could hear the fabric of the denim stretching as her bouncing butt was enlarging in every direction. Cecelia's body once again straightened up, surprise by the feeling on her rear. Her ass was getting so humongous! Her jeans could barely contain her butt now, he could see glimpse of her butt getting out of the top, the belt she had disappeared as her hips went way too wide for a girl that small. It gave her silhouette a beautiful pear shape, but still her two butt cheeks were round like two overblown balloons. It was now way bigger than Zoey. Some of the threads of the denim were snapping, leaving little holes here and there. She was fondling her overly large derrière and muttered:
"No way, my butt..."
But then it was too late. Reality caught up, and in fact, she always had that huge butt. What surprised Arthur though, is that she kept the same, obviously too small pair of jeans. Well, the truth is, since her ass was sensible to sexual arousal, she loved the feeling of the tight jeans around her thighs. Her panties too were stuck between her two butt cheeks and she loved it. Ever since her butt grew, she didn't care, she kept the same clothes. Every morning, she woke up early in the morning and spent half an hour struggling to put on the jeans. It was that tight! So tight, that in fact, she had to reinforce the buttons on the front so that they wouldn't snap. But also, so tight that every day the holes on her jeans were getting bigger and bigger. So tight that her flesh was visibly bulging out of those little holes! So tight that at each and every move, you could hear the creaking of the denim being tortured!
Arthur smiled. Cecelia was trembling with embarrassment.
- Something wrong with your butt, Cecelia?
- N... No...
- Because I always wondered... Why don't you put on some larger pants? That seems tight...
- No, I already told you, they're really my size, it's supposed to be tight...
- Right, right. Anyway, thank you for helping me showing an example of another way of saying thank you. And to thank you, I'm gonna show you how to say thank you in Eastern Asia. You see, they don't slap the butt, they gently fondle it...
The other girls were taking noted while Arthur moved his hands towards Cecelia's huge ass, and gently caressed it.
"GAH!"
To Cecelia, it was like getting hit by a lightning bolt. It was after all the most sensitive part of her body, and the feeling of her own teacher, whom she liked so much, touching her butt like that was so... So... Wrong... Yet so good! Her knees were quivering. Arthur smelled how sweaty she was right. Her breath was shaky too. She really couldn't keep a straight face. And right between her legs... It started to get really wet. This didn't went unnoticed by the other girls, but the only one who spoke out was Rin:
- Cecelia... You seem to enjoy it a bit too much...
- Wh... Why are you saying that?
- Come on, it's pretty obvious... You're creaming yourself right now.
- Wh... What?
Zoey and Tabitha giggled. Rin continued:
- I always felt that weird how you seemed to enjoy to be thanked, but now it's painfully apparent. You just love having your butt touched, right?
- N... No...!
- Come on, just admit it! You big booty weirdo!
- Stop it! Sto...
The other girls were laughing at her like demons. Cecelia felt so embarrassed she felt incredibly cold. Tears were coming up on her face. She was really about to melt. Arthur stopped touching her butt and thought about his next move.
Sat May 12 00:00:00 2018