(Chapter originally written by PhoenixStriker)
"Oh! He'll come with me!" Your mother shouted, louder than she'd intended. Mari looked at her in confusion, and your mother's cheeks reddened. "I-I mean...if he wants to. I just feel like I don't get to hang out with my little boy anymore. I guess it isn't...cool...to hang out with one's mother, but I still enjoy spending close time with him." Lauren stammered, looking down at you and smiling. "A mother's entitled to that, right?"
Without skipping a beat, Jenna grinned. "Hey, sounds like a good idea to me! I'm sure you two would have loads of fun together!"
Your sister then eagerly wrapped one arm around Mari and the other around Ashley. With a grin and a laugh, your sister dragged your girlfriend and her best friend away, leaving you alone at the table with the two titanic mothers.
Your mother smiled warmly at you, her eyes gleaming with happiness. "Oh, I'm so happy you agreed to come spend time with me, Matt. That really means a lot to me."
You struggled to refrain from rolling your eyes (you hadn't agreed to anything, after all), and simply gave your mom a weak thumbs-up. "Sure thing, mom. What...uh...did you want to do?"
Lauren beamed down at you. "Well, I was going to take a two-hour nap or so and work on my tan for a start! Rio was going to go for a swim during that time, but knowing her that means speed racing like a million laps! Then, we could get lunch and maybe swim or try out some volleyball afterwards?"
You frowned. "What should I do?"
Lauren laughed. "Well, if you want my recommendation, honey, I'd say you could use a nice tan. I think you've been spending a bit too much time indoors. You're a little pasty, honey." Lauren tried and failed not to laugh, and her light teasing caused you to blush. "You are, of course, more than welcome to swim with Rio, though I need a favor of you before you do that."
While Lauren was talking over the plans with you, she and Rio began moving away from the table and towards a nice cleared space right in the middle of the grassy lawn, the hot sun beating down upon the three of you. As your mother finished giving you possible options, Rio took the opportunity to spread out a wide towel for her good friend, as well as procure a bottle of suntan lotion. When she finished, she stood up, announcing she was going to get a few water bottles and return to drop them off before going to swim.
Your mom set you down on the towel, and you cupped your hands to call up to her. "So, what's the favor?"
"Oh, you'll see in a second, Matt, honey." Lauren explained. "Just give me a minute." She said, then began glancing around The Oasis area. After a moment, she smiled appreciatively. "Ah, good. Don't see a single man in sight. Not that getting looks from strangers isn't rather flattering at my age..." Your mother trailed off, a slight blush on her face. She then started grabbing at the hem of her swim dress, and you stared up at her, having no idea what she was doing.
Her plan so became horrifyingly obvious as you watched your mother casually strip out of her swim dress in record time. Your jaw barely had time to drop before Lauren had wiggled out of the tight swimsuit, tossed it aside, and was now stark naked, her faintly sweat-slicked body glistening in the sun like some sort of giantess goddess.
Catching your embarrassment, Lauren stifled a laugh. "Oh, we're mother and son, Matt, honey. And it's not like your little accidents haven't lead to much more...awkward situations between us." Your mother smiled and let her laugh loose as she stretched, and then reached for her suntan lotion. Despite her teasing reprimand, you kept your back firmly turned to her as you heard her lather herself up with tanning lotion. Off in the distance, you could hear murmurs and whispers of awe, making it clear that even the women of The Oasis were watching your mother's unintentional show with rapt awe and jealousy.
Finally, Lauren finished, and you opened your eyes just in time to see her start to lie out on the towel on her stomach. Screaming, you dove out of the way, narrowly avoiding being pancaked beneath Lauren's gargantuan left breast. Seemingly not noticing what she'd almost done, your mother almost lazily snatched you with two fingers, and dangled you in front of her face as she rested on her elbows.
"Alright, Matt. Here's my little favor." Lauren explained. "It's...well, it's hard for me to properly lather my butt with tanning lotion. It's just so big that I always miss a spot. It wouldn't trouble you to rub the lotion in before you get yourself ready for your own tan, right?"
You sighed. "Mom, that's...a big ask. And I didn't say I would be tan--"
Lauren's eyes widened. "Oh, duh! Sorry, Matt. I forgot you still had your suit on too. Can't tan well with a suit, can you? How else can we get sexy matching tans?" Your mother giggled at her ridiculous remark, and then before you could blink, dug her nail into your trunks and ripped them clean off, leaving you as buck naked as she was.
You cried out in surprise. "MOM! What the--"
"Now, let me just get you into position!" Lauren announced, your words going in one ear and out the other. Leaning back, your mother craned her arm behind herself into the proper position, and then dropped your body smack into the center of her jiggly left butt cheek.
You stuck the landing, and it was a good thing you did, because Lauren wasted no time in using her other hand to squeeze out a veritable mountain of tanning lotion onto the exact spot you'd landed on. Already sensing your doom approaching, you scrambled to avoid the incoming downpour, only to slip on a congealed bead of sweat and topple towards the dark abyss of your mother's butt crack.
Crying out, you flung your arms out and kicked off of your mother's doughy flesh, launching yourself over the chasm to just barely land on her right butt cheek. The slippery (and nearly gravitational pull) of her butt crack still tried to claim you, however, and it took all your strength to kick your legs and flail your arms and save yourself. Feeling like Wile E. Coyote in an old cartoon, you scrambled up onto your mother's right butt cheek, sprawling out on your back panting with exertion.
Suddenly, your mother's cheek tensed up underneath you, the muscles in her ass tightening, and your blood ran cold as your mother's hand returned to view...open-palm careening right towards you!
You couldn't even scream before Lauren's hand smacked into your body, crushing you flat like a bug. Her ass cheek rippled from the impact, jostling like crazy, her doughy flesh doing nothing to support you as you were reduced to a sticker from the force of the impact. Though her hand retreated a second later, the damage was done. Through the force of the slap and some trace amounts of sweat sticking to you, you were properly adhered to her right buttock. You'd reform in time, of course, but it was still degrading and annoying.
Lauren pulled her hand back with a huff. "Stupid bug, tickling me. Sorry if I scared you, Matt, honey. You can get started now, okay?" Your mother laid her hand back down and rested her head against the towel.
You mentally groaned. Of course she was oblivious to what she'd done. Internally sighing, you started to focus on reforming, but it was slow going. The slap had really taken it out of you, not to mention your efforts to avoid slipping into her crack, and the sweat and sun. After five minutes, you were still a flat sticker, but you felt marginally less glued in place.
Frowning, your mother lifted her head. "I...can't really feel you, honey. Are you still there?" Your mother asked, craning her head back. All she saw was her own mountainous bubble butt, and the glob of tanning lotion.
At that moment, Rio returned, water bottles in hand. The toned Brazilian swore under her breath as she approached the towel. "would you believe there could be a line that long for water?" She groaned, setting the bottles down. "Anyway, I'll be swimming. See you in two hours..." She trailed off as her eyes locked directly onto your visible form splattered to your mom's right butt cheek. She frowned, though more out of inquisitiveness than concern.
Lauren, blissfully unaware, smiled at her friend. "Oh, wait. Before that, Rio. Could you finish lathering me up? Matt was supposed to, but I don't know where he's gone."
Rio raised an eyebrow. "Matt? Lauren, you know that he's--"
"Gone, right?" Your mother cut Rio off. She sighed. "I knew he'd run off. What son wants to spend time with their mom instead of their girlfriend? I'm such an idiot."
Rio shook her head. "No, Lauren. You aren't an idiot. I'm just saying that Matt--"
"Is an adult, right?" Lauren finished for her. "You're right. And thanks for saying I'm not an idiot. I worry sometimes, I can't help it. But, Matt was the one who said that he was the adult now. He could take care of himself. I should focus more on me. I really need to put that into practice, huh?" Your mother smiled wryly at her best friend. "Maybe that's all Matt was trying to say by running off on me."
Rio flicked her gaze between you and your mom, her expression analytical. Like she was deciding on something.
Your mom punctuated her point with a little wiggle of her booty, jostling you around. "Anyway, could you finish applying the lotion? I want my tan to be perfect!"
Rio looked back at you, hesitated a moment longer, and then responded.
1) Shrugging, Rio applies the lotion all over your mom's butt and you, sealing your fate.
2) Taking pity on you, Rio discreetly frees you and finishes helping your mom. She then takes you swimming with her.
3) Taking pity on you, Rio frees you and shows you to your mom, leaving you with Lauren as she heads off.