Anna gagged on reflex, as a strong smell drifted in Anna's nostrils while hanging in the air. It smelled like.... ass. Even from this distance, she could feel the heat radiating from inside the pale cheeks. This was too much, it was torture, she tried to struggle free but Molly's grip around her head was just as unforgiving.

She could see the thin black fabric leading into her crack and then disappearing from sight in between her meaty cheeks. 'No! , She's wearing a thong', Anna thought, her eyes widening in horror, there was no way she could keep herself on the exterior of the ass with a thong. Molly looked back over her shoulder and grinned. She shook her hips, her juicy cheeks wobbling in response," Well, Anna, just to let you know, I haven't taken a shower after coming back from school so it may be a bit wet...ish. Now in you go!"

Molly quickly let go of her sister allowing her to freefall onto her panties. Anna screamed as she was let go and landed on the soaked fabric of her sister's panties with a soft bounce. Almost immediately, Molly released her left hand and her thong shot back into place propelling Anna into depths of her gigantic ass-crack.
---------------------
Anna was in hell! The muscular cheeks of her sister had smushed her in between them. The smell was horrible, a combination of dry sweat and the rancid odor of shit emanating from her puckered asshole up ahead. As Molly began to walk the fleshy globes started to grind Anna's fragile body back and forth in their grasp, squeezing the air out of her. Anna tried to scream only to welcome a mouthful of ass-flesh.
Her eyes bulged open as it invaded her mouth. The sour taste burning her tongue and then advancing down her throat. She knew this taste would be etched inside her forever.
"Mmmph!! Mmph!!!!!", Anna struggled to break free but it was futile, the opposition was too strong...... her sister's ass-cheeks.

Anna felt sick to her stomach, quite literally.
'How? How could she do this to me? ', Anna thought as her eyes became moist once more.

After snapping her panties back, Molly felt a tinge of guilt. She could feel Anna trapped inside her ass between her cheeks. She had acted on the spur of the moment after Anna refused to acknowledge her duties. 'But It's not like I can just take her out of there now, she did disobey me, although sticking her in my ass is a bit much, but still... Ugh, alright, I'll just let her out after so-

"Ahh!", Molly suddenly let out a high-pitched squeel. She felt something in her ass, something foreign, It was wet, sloppy and..... in Anna's position. Molly's heartbeat sped up, It was Anna's tongue, SHE WAS EATING HER ASS!!!
She could feel Anna squirm in a frenzied manner and it felt...... good. Molly couldn't believe what she was thinking, punishement aside, did she actually like this? Having her sister flattened inside her backside at her mercy?

Hesitantly she concentrated and squeezed her ass, the fleshy mass immediately tightening and forcing itself on Anna's body. Anna shrieked in pain as the cheeks connected, now there was no room to breathe, even through her nose, but most of all, it elicited a new level of pain on her. Simultaneously the butt meat inside her mouth spread itself, puffing up her cheeks. Then the pressure subsided and the cheeks went back into their original position, albeit still squeezed tightly, there was just enough space for her to breathe. Anna, her mouth still full, greedily sucked in the shit tainted air around her through her nose, thankful that she could at least breathe now.

Then it happened again, the massive orbs came together squeezing the dear life out of Anna and then let go once more. Molly compressed her ass several times after that trying to comprehend her newly arising emotions. After releasing her glutes for the fifth time, she sighed in pleasure. She realized it now, as weird as it was, Anna's struggles were actually turning her on. Knowing that she had a part of her ass in her mouth which was pretty much the most disgusting part of her body, made her tingle with excitement. Although she felt pity for her poor little sister, she was in time-out and time-out's aren't really supposed to be enjoyable. When Molly was in the middle of trying to convince herself what she was doing was right, a thought suddenly came to her mind. Her breath was starting to become rapid. 'Maybe I could..... No, I did promise Anna I'd do everything slowly, but, yeah I guess she agreed to obey aswell, so we can forget the rules this one time.' , Molly licked her lips.

"ANNA, CAN YOU HEAR ME? NOW PUNISHING YOU IN MY ASS IS FUN AND ALL, BUT I HAVE SOMETHING ELSE IN MIND FOR YOU NOW? AND I'LL EVEN GIVE YOU A CHOICE. IF YOU AGREE, THEN ALL YOU HAVE TO DO IS TAKE A LITTLE BITE OUT OF THAT PIECE OF DELICIOUS MEAT IN YOUR MOUTH. AND IF YOU WANT TO STAY THERE, I WON'T REALLY MIND THAT EITHER.", Molly boomed down at her sister, loud enough for Anna to hear through the thick walls of flesh.

'She'll use me for something else? I'll be out of her sweaty ass? I don't care what she does with me after this. Nothing could be better than this', inside her humid prison, Anna was overjoyed when she heard Molly's words. She closed her eyes, even if what she was about to do was disgusting beyond belief, she will do it. And so she bit into the bunch of ass-meat that had taken shelter inside her mouth. The taste of shit and sweat exploded in her mouth, but it would be worth it, she could finally leaved this retched place.

Molly felt a tingling sensation from Anna's action and chuckled," Okay sis, let me get you outta there." She pulled her jeans back with her right hand and the other hand swooped downwards and entered her crack taking hold of her sister and brought her out.

Molly brought her sister in front of her nose and giggled," Wow, sis! You sure smell horrible." Anna was too tired to even reply and lay down on Molly's soft palm.

Molly then placed her sister on the center of her bed and to Anna's surprise, she began to take off her jeans followed by her thong. Anna stared up, slack-jawed at the sight of the two moon like buttcheeks suspended in front of her. She had only taken a small glimpse when she was dropped inside her jeans. They were huge, two perfectly round globes of fat and muscle that could swallow her effortlessly.

After undressing completely, Molly turned and smiled towards Anna. She extended her open palm in front of Anna and she stepped on it cautiously. With Anna on her hand, Molly laid on the bed on her stomach and place Molly on her stomach and then gently placed her on her right buttcheek.

Anna looked down on the cheek she was standing. A vast hill like landscape, and incredibly soft with each step causing her feet to sink downwards. She could feel the warmth of her body heat flowing through it. If it weren't for the grease and dried sweat stuck to it, it wouldn't really seem that bad. At that moment a voice came from above, " Now, Anna, you know what I want, kiss it."

Not wanting to incur the wrath of her giant sister as before, Anna got down on her hands and feet and puckered up. She pressed her face down on the squishy surface and kissed." Good, now lick it." Anna pressed her face, stuck out her trembling tongue and licked her sister's ass."Okay, now keep going until I order you to stop." And so Anna kept on licking, the sweat and grime constantly infiltrated her mouth, but she knew she could not stop or Molly would definitely make it worse. If there was a silver lining to this, well, at least she was on the surface and not inside anymore. Although the taste still burned her tongue, it was lacking the faint odor of shit that always packed the final punch.

Molly on the other hand, felt amazing, her sister was actually licking her ass willingly. This was too good, other than her feet, Anna would definitely be getting close to her ass a lot after this." Hey little sis, put in some more effort won't ya. Work your tongue more, give me some sloppy, sticky ones, get more of that ass inside.", Molly teased from ahead. Anna shuddered at her sister's command but nonetheless, obeyed. She began to slosh the tongue in her mouth to increase the amount of saliva and then reached down and took a bite out of Molly's ass. Anna was humiliated beyond belief, her blushing with shame and just she was about to take the ghastly thing out, she felt something prodding her head. It was Molly's finger. " C'mon Anna, don't stop now, savour it, circle it inside, drag your teeth , show a little enthusiasm. There you go, now don't stop or I'll be cross little sister." Anna gulped, but persevered. She began to move it around inside her mouth with her tongue, grinding it slowly with her teeth. Her sister was right now that she was actually trying her best at this job, she could "savour" its taste.

"HOW IS IT SIS? IT'S GOOD RIGGHHHT?", Molly asked in the same annoying teasing voice.
Anna knew what she had to say, as Molly had told her before, she had no real choice. With ass-meat still in her mouth, she shouted," Iz Delizwos, siz!"

"AWWWWW", Molly cooed," YOU DIDN'T EVEN TAKE IT OUT, I JUST LOVE YOU RIGHT NOW ANNA! YOU KNOW WHAT, LET'S GIVE THIS LESSON A NAME SINCE YOU'RE SO GOOD AT IT. HOW ABOUT..... Hmmmm.... YES!
BUTT MUNCHING! WITH YOU AS MY LITTLE WIDDLE BUTT MUNCHER. GREAT, NOW KEEP GOING AND I'LL THINK ABOUT ENDING YOUR LESSON."


After a few minutes of "butt muching" on her sister's dirty backside, Anna's mouth became dry and her tongue was in pain from the constant "exercise". She got herself up and shouted towards her sister," Molly! Please! Just give me a small break, I'm tired and my tongue's sore. Please! Just please! I'll do even better after that."

Molly was enjoying her sister's little tongue bath on her ass when she felt her getting up."Hmm?", Molly grunted in annoyance.'This better be something important', Molly thought. After hearing Anna's plea for rest, Molly seethed with anger. Without any delay, she swung her right hand over Anna's position and pushed down on her head with her index finger forcing Anna's face into her skin.

" ANNA YOU FUCKING BITCH! I AM SICK AND TIRED OF YOUR WHINNY ATTITUDE AND I JUST THOUGHT YOU WERE COMING AROUND. EVERY TIME WE GET TO THE GOOD PART YOU JUST BLOW IT. CAN YOU JUST NOT FOLLOW SOME SIMPLE ORDERS. SINCE YOU OBVIOUSLY HAVEN'T FUCKING LEARNED ANYTHING, WHY DON'T I GIVE YOU A NEW JOB, ONE THAT WILL BE MORE SUITABLE FOR YOU.", Molly's voice thundered around Anna.