After work I usually hit the gym, but that day I changed at the office and drove to the park, hardly noticing the traffic as I couldn't get my mind off my upcoming encounter with my 35 year old mother in law Cherie. I was wearing a gym top and shorts baggy enough that they didn't hinder my ten inch hog. I felt a little underdressed for something like a date. But I reminded myself that this wasn't a stranger I was meeting, this was someone who knew me relatively well, and, based on her daughter's revelations to me over the phone that afternoon, knew what I was packing between my legs.
It was still a challenge to truly believe that she was going to be ready for me to fuck her ass of course. Joking about taking her rectal temperature aside, when I'd forcefucked my way up her daughter's butthole it had taken a lot of lube and some aggressive fingering and fisting. Yet my wife Sophia seemed convinced that this was what her mom had signed on for so I tried to quell my doubts.
I pulled up next to Cherie's car in the parking lot. I got out and came around to her driver's side door. She was seated inside with her head down and her hands twisting in her lap. She seemed cowed, or anxious. It was a little jarring because usually Cherie was very flirty and confident, more like my wife's sexy older sister instead of her mom. But now she looked up at me through the driver's window and she was clearly unsure, like she'd turned into Ms Zero-confidence.
At that moment I realized that she had heard all kinds of things about my sexual appetite and prowess from her oldest daughter. Had watched me plow the girl from studious freshman to pregnant housewife in a little more than a year. She had visions of my massive dick dancing through her head.
It was one thing to tease and to tempt, it was another thing to actually be caught out. And, despite her anxieties, she clearly wasn't able to back out either. She was wearing skin tight yoga tights that showed off her thighs and a sports bra that was making a futile struggle against her F cups. Looking down at her through the window I felt like I could practically fall into her cleavage. Usually I would have tried to avoid ogling her, but I couldn't see the point at the moment.
Meanwhile my cock started to get a bit chubbier in my shorts.
Cherie's eyes were level with my crotch and she flicked a look at my package and then kept staring. I guessed I wasn't the only one who had given up trying to hide their horny eyeballing. Her gaze seemed to be boring a hole in my workout shorts and my cock kept getting harder. I watched her visibly gulp before she tore her eyes back to mine. It looked like there was a thin sheen of perspiration on her chest. I opened her car door and reached for her hand. I helped her to stand, her legs seemed a little wobbly.
We both said "Hi!" at the same time, and that seemed so ridiculous that we both laughed. I hadn't let go of her hand for some reason, and I could feel and see her relaxing a bit. She still didn't have the cocky energy I was used to, but that was ok.
She spoke first, standing a few inches from me, trapped between me and the triangle of her open car door and her driver's seat.
"I'm so embarrassed." She blushed and looked away.
"What, why?" I squeezed her hand to get her to look back at me.
"You know!" She bugged her eyes at me, letting them say the unsaid, and I was suddenly strongly reminded of my wife Sophia, "Don't make me say it!"
I put my free hand on her hip, I felt her tense a little at that but not pull away.
"Cherie, I'm gonna make you do a lot of things and some of them might be a bit embarrassing." She blushed harder at that, "Talking about those things won't be anywhere near as embarrassing as actually. Doing. Them." I let that hang there. Her free hand was held to her chest over her heart, like she was trying to calm herself down. But she didn't look away from my eyes.
"Meeting you, like this, feeling like I'm throwing myself at someone. But not just someone--my son in law. My son in law who supposedly has a massive dick that he can use to conquer any woman he wants. Who doesn't take no for an answer! Who's about to make me a grandmother in my thirties and who I've been wearing a buttplug all afternoon to get ready to meet! Cuz he says he's gonna stick his 10 inch thermometer up my poop chute and I'm practically drooling just imagining it!"
I couldn't keep myself from interrupting, "You are?"
Her eyes shot down to my ominous crotch bulged and then back to my face as she replied softly, "Oh yes, I like getting my butt fucked. A lot. So much. And it's been so long since someone drove a big hard spike in me back there and staked his claim. I can hardly think straight my butt's so dick hungry right now."
With this admission she was blushing hard and looked away from my face, but made the mistake of looking down at my crotch. I think that's when we both realized that the tent in my shorts was jammed up against the cleft in her thighs. "Oh God." Now it seemed like she was talking to herself instead of me, "It's a monster. How does my baby make it fit in her little body?"
I guided the hand I was holding down to my bulge and rested it there. Almost despite herself she let it start to explore me through my shorts. Her breathing was getting shorter. Not panting by any means, but getting there.
"Cherie, your daughter doesn't make it fit, I make it fit. She just takes it. That's what you've come to try out, yes? To see if you've ever had a thermometer like mine take your temperature? Or a dipstick like this" I flexed my cock against her hand and she trembled, "check your oil? To see if you can take it like I make your little girl take it?"
She tore her eyes away from the fuck-organ she was hungrily pawing at, now with both hands, as though trying to come to terms with the dimensions. She didn't answer in words, she seemed too cotton mouthed from horniness to form words at that moment, just gave me a stuttering nod.
"I can smell your cunt mama. It smells like your babygirl's. I bet you cum like she does." The hand that wasn't now clenching her hip and steadily rocking her cameltoe against the probing head of my shorts wrapped junk slid down the front of her workout pants. She was shaved bare and her clit was a hard nubbin standing at firm attention between the filmy sopping inner lips of her pussy. I tweaked her clit with my thumb and pressed two fingers inside of her, hooking to the front wall of her vaginal vault to scrape across her spongy g-spot.
She cried out then and her knees buckled. But my clawed pussygrip wouldn't let her fall that easily. As her thighs flexed with her sudden orgasm I could feel the firm girth of the buttplug she'd crammed into herself press against my fingers through the membrane between her pussy and asshole. Any questions about whether she was ready and willing to be taken anally were completely put aside. I definitely would be visiting a tide of dickstruction on her ass. She really was desperate for it.
I kept flicking my fingers and dragging her hips back and forth across my bulge. Her eyes were rolled up in her head and she came again. I thumbed her clit like the button on a video game controller and it looked like she was giving me a high score since I felt her drenching herself in girlcum.
After a minute or two I was painfully hard. There was no way I could walk through a public park at that hour with a ten inch boner. I made an executive decision, since my mother in law looked to be in no state to decide anything.
I pushed her down to sit on her drivers seat sidesaddle with her legs out the door. She was taking deep gasping breaths and still didn't seem to have her bearings. My cock was lined up with her face trying it's literal hardest to burst from the shorts that confined it.
She focused on it and I watched the deer in the headlights expression I knew to expect wash over her features. Clearly things were becoming very real for Cherie and very fast. I idly wondered if she was thinking that the buttplug was a mistake, or if she was regretting not getting an even fatter one.
"Don't be afraid mama-bitch, you're gonna do just fine."
Her chest was heaving as she still drank in big lungfuls of air after her series of firecracker fast pussygasms. I looked at her jiggling F cups and realized what I wanted first.
