Your mom had farted while on the toilet so much the bowl was quickly filling up with her gas. Combined with her enormous rump creating a perfect seal over the rim she was essentially gassing you, and you began to feel woozy and light-headed as you were drugged by your own mother's farts. However, she was enjoying the quiet time you were spending with her ass, and left your head in the toilet bowl for another five minutes before she helped pull you out and dabbed your face with a wet towel. Making sure she had everything clean, she kissed you lightly on the temple before saying. "Now normally I'd like you to smell more like butt sweetie, but I think what I'd really like now is just to go to bed, and we can't have you dirtying my sheets, can we?" She smiled, leading you by the hand back into her bedroom as your sister filmed it all from behind. When you were all there, she began to narrate to the camera.
"Okay bro, now here's a fun game even you should be able to get! Obviously your sleeping with mom tonight (lucky you!) so why don't you lie down in the spot most appropriate for you?"
Actually, sleep sounded pretty good right now. Looking to your mom for help, she just smiled wordlessly at you, nodding her head towards the bed. Even smiling there so happily at you, even knowing how much your mom loved you, sometimes she looked so regal, so dominant. Sometimes you felt like an ant before a queen. Shuffling forward, you stumbled face-first into her buxom chest, your sister laughing as you extricated yourself from her cleavage. It was obvious your body still wasn't entirely moving of your own volition as you simply flopped onto the bed, face up on her large, silken ruby pillows. A sound like a buzzer on a tv show came from your sister and your mom laughed as the camera panned to her.
"Don't be silly sweetie, " she said, giggling, "that's not where your head goes!"
She pointed to a spot roughly halfway down the bed where two huge, round objects had obviously formed a large dent over a long period of time. She patted it invitingly, and you pressed your head down into the indent made by her big bum. "There sweetie, don't you feel more at home already?" Naked as you were, your member answered for you, causing your mother to cup one beautiful, regal cheek with her hand and laugh out loud. "Well, I'm glad to know you're having the response I hoped for being tied face-first into mommy's ass all night!"
"T-tied..?" You mumbled, your first words in seemingly hours.
"Oh yes sweetie, just at first. It's a key part in our relationship; we can't have you trying to get your face out of my ass all-night, especially to try to breath. Hmm?'
"Yeah bro!" Your sister piped in. "How are you going to learn to sleep under mom's big butt if you can't even spend one measly night under it without trying to escape?" She laughed heartily at this. Smiling at her wonderful daughter's joke, your mother asked her to get the restraints while she cooed at you reassuringly and ran her hand up and down your chest, your stomach, and then lightly flicking your engorged member teasingly with her fingernail and sighing.
"Oh sweetie, you had so many chances to use this thing. I was a bit surprised you were so hopeless with girls, but I guess it's really for the best that you become subjugated under me." She smiled and clasped your face with her bejeweled hands and kissed your cheek lovingly.
"I bet you never even got to feel a real girl's boobies before, hmm?" She said, looking right at you slightly sadly. "Don't worry, from now on you can pretend that mommy's big butt-cheeks are the boobies of your favourite girl at school and you can get your face right in between them! It'll be our little secret, okay?" She winked, kissing you again before getting up. When she did you were surprised to see that your sister had already attached two strong looking shackled to the bedposts and tied them securely to your ankles Seeing this, your mom smiled proudly at you before leaning down and burying your face into her copious cleavage. Wrapping her arms around your head and holding you tight as your sister worked on securing your arms, your mom giggled and whispered. "What's the matter sweetie? Something distracting you from escaping?" Teasingly she jiggled her big boobs around your face. "Don't worry sweetie, I promise this is what's best for you. And be honest with me, I have a great rack, don't I?" She winked, getting up as your sister had fixed the last shackle to your arm, leaving you laid out spreadeagled on the bed, unable to move, with your squarely head in the favourite resting spot of your mom's big butt.
"Do you mind just watching your brother for a minute honey while I go slip into my PJs?" Your mom asked your sister as she slipped out of sight.
"Sure thing mom." Came the reply. Your sister waited until your mother was out of earshot before coming in for a close-up. "Wow! Abducted by your very own mother and forced to live tied face-first into her ass! Oh, I should get a before shot - before her ass is permanently indented onto your face! Just like this mattress!" She laughed, zooming in. "How does it feel knowing that while all your friends were asked to the prom this year, you'll have to get to first-base with your own mother's big, round, heavy ass?! Does it make you hard down here?" She said, stepping heavily onto your flat member and grinding down on it hard. Hearing your mom come back in, she hurriedly stepped back.
"Well, I'm ready for bed!" Your mom crowed, entering the room in what for all intents and purposes looked just like her regular PJs. The nightclothes were a simple cotton shirt and pants, white with tiny pink hearts all over them. They hugged her large breasts, hips and thighs, but not especially so. You were sure your mom had a dozen like them. They looked clean, but well worn. "No sweetie, look here!" She cried, spinning around and pointing to the seat of her pants. Or rather, to the large hole in her pants where her prodigious ass now spilled out unhindered.
"I made these modifications to all my pajama bottoms sweetie. This way I can wear my normal PJs and get a great nights sleep without disturbing my regular routine too much. See, I'm still mommy! I'm just also now your facesitting queen!"
Your mom approached the bedside and happily bent over, making sure you got a close look at her bulbous ass. Out of the corner of your eye you could see your sister moving around to get a better shot.
"Thankfully it wasn't too hard because my big bum had worn down the seat of most of my pants. I swear, sometimes I think my curvy bottom is so hungry it has a mind of it's own!" She laughed again, causing those gelatinous cheeks to jiggle around right in front of you. This was it you thought; your mom was really going to sit on your face and then go to sleep with you still under her big butt. The sight of her in such normal attire made it even more obvious - if she had been dressed in some lingerie or dominatrix outfit this would almost have been easier, seem less real to you. But there was your mom, in her old white cotton pajamas with the pink hearts on it, like she dons almost every night, and the only thing unusual was that she had purposefully removed the large seat area from her pants with some scissors so that when she sat on your face you would be in direct contact with her enormous, round ass-cheeks.
Seeing you staring at her large derriere, your mom motioned to your daughter to film as she brought two fingers up to her lips and kissed them softly. Then she brought those fingers down and pressed them into her soft left cheek, then her right one. Smiling, she then pressed those fingers directly against your lips and winked tauntingly.
"Don't worry sweetie, I wont keep you waiting long now! Mommy will bind your face to her big booty, and we'll both live happily ever after with me as your queen!"
"Oh mom!" You faintly heard your sister gasp, "that sounded so awesome! You're so cool!"
"Oh stop!" Your mom blushed, waving her hand frantically. But you weren't really listening.
You knew this was completely humiliating - you were completely aware of that. No boy's goal should ever be to let his mom sit on his face for a full night. But somehow that made it feel all the more ... right.
Those enormous cheeks. Those amazing cheeks. They looked big back when you were trapped with them in the toilet bowl, but now you could see how they were much bigger than you had ever imagined. They sagged a little. There were tiny pocks of cellulite. You had dreamed of tight, young, tiny buns and young girls. But these were your moms butt-cheeks, and she was definitely sitting on you! Sweat lashed your face. Your eyes bulged out of your sockets. Your body fought with your mind even as your nose brushed between those warm, round cheeks. But your mom's face such smiled serenely, reassuringly at you over her hips, immensely proud of her beautiful boy. And then, she sat on his face.