I was home from college for the summer and Mom had decided to throw a small backyard pool party. Just a few of her friends, some neighbors, and me. Nothing big, but she went all out with the decorations, music, and food. What she didn’t know was how fucking dangerous it was going to be for both of us.
Mom is forty-five but looks closer to thirty-five. She’s short, curvy, and blessed with a pair of massive, heavy natural tits that have only gotten bigger and softer with age. They’re the kind of tits that strain against any top she wears. Today she had on the tiniest black micro bikini I’d ever seen on her. The top was basically two small triangles that barely covered her wide, dark areolas and left most of her huge breasts spilling out the sides and underneath. The bottoms were a thong that disappeared between her thick ass cheeks.
I tried not to stare, but it was impossible. Especially when she bent over to adjust the lounge chairs and those massive tits hung and swayed heavily. My cock, which had always been embarrassingly large, started swelling in my swim trunks. At full mast I’m packing a thick, veiny fifteen-inch monster. It’s not something I can easily hide, and today it was already creating an obvious bulge.
“Jake, honey, can you help me with the ice?” Mom called from the kitchen doorway. Her voice was light, but when I turned around her eyes flicked down to my crotch for just a second before she looked away, cheeks slightly pink.
I grabbed the cooler and followed her outside. The party was in full swing. A few of her girlfriends were already in the pool, laughing and drinking. One of the neighbor guys kept glancing at Mom’s chest every time she walked by. I couldn’t blame him. Those tits were hypnotic — big, soft, and jiggling with every step.
As the afternoon went on and everyone got a few drinks in them, the vibe got looser. Mom was being extra flirty, probably because of the alcohol and the way the sun was hitting her oiled skin. She kept coming over to where I was sitting on the edge of the pool, leaning down to talk so her heavy tits were right at eye level.
“You’ve really filled out at college, Jake,” she said, running a hand over my shoulder. “All that gym time is paying off.” Her fingers lingered a little too long. My cock twitched hard in my trunks.
“Thanks, Mom. You look… really good too.” My eyes dropped to her chest before I could stop them.
She noticed. Instead of getting mad, she smiled slowly and pushed her shoulders back a little, making her huge tits strain even more against the tiny bikini top. “You like Mommy’s bikini?” she whispered so only I could hear.
I swallowed hard. “It’s… really small.”
She laughed softly. “That’s the point, baby. I wanted to feel sexy for once.” She reached down and adjusted one of the triangles, her fingers brushing the top of one heavy breast. “These things have gotten so big lately. Hard to find anything that fits.”
My fifteen-inch cock was now rock hard and throbbing painfully. The head was actually starting to peek out the top of my waistband if I wasn’t careful. Mom’s eyes kept drifting down there.
Later, most of the guests had gone inside for more drinks or were floating in the deep end. Mom and I ended up alone on the shallow steps of the pool. She was sitting on the step above me, legs spread just enough that I could see the thin strip of fabric barely covering her pussy.
“You keep staring at my tits, Jake,” she said quietly, voice husky. “It’s okay. I’ve noticed how big you’ve gotten… everywhere.”
I couldn’t believe we were having this conversation. The taboo thrill made my cock ache.
“Mom… your tits are fucking incredible,” I admitted. “That bikini is driving me crazy.”
She bit her lip and looked around quickly. Everyone else was distracted. She reached behind her back and untied the bikini top. It fell away and those massive, heavy tits spilled out into the open — full, round, slightly sagging under their own weight, with big dark areolas and thick nipples that were already hard.
“Touch them,” she whispered. “Feel how heavy they are.”
My hands were shaking as I reached up and cupped them. They were warm from the sun, soft, and overflowing my palms. I squeezed gently and she moaned. I leaned forward and sucked one thick nipple into my mouth while my other hand kneaded the other massive tit.
“Fuck, baby… that feels so good,” she breathed. “Mommy’s been thinking about this for a long time.”
I was rock hard and leaking. She noticed the massive bulge and reached down into my trunks. Her eyes widened when her fingers wrapped around my thick shaft.
“Oh my God, Jake… it’s so big. Fifteen inches? Really?” She stroked me slowly under the water, feeling the full length and girth. “No wonder you’ve been hiding this monster.”
She pulled my trunks down enough to free my cock. It sprang up, thick and heavy, the head already glistening. Mom wrapped both hands around it and started stroking, her huge tits hanging right above the water.
“I want to feel this between my tits,” she said, voice thick with lust. “Right here at the pool party. Come on, baby. Fuck Mommy’s big tits.”
We moved to one of the lounge chairs partially hidden by the pool house. Mom lay back, pushed her massive tits together, and poured some sunscreen into her cleavage. I straddled her chest and slid my fifteen-inch cock between those warm, soft, oily tits.
The contrast was insane — my thick, veiny monster disappearing between her huge soft breasts. She squeezed them tight around me and I started thrusting. The head of my cock kept popping out near her chin on every stroke. She opened her mouth and licked the tip every time it came close.
“Fuck my tits, Jake. Use Mommy’s big tits,” she moaned. “They’re all yours now.”
I fucked her tits faster, the wet, slippery sound mixing with the distant music from the party. She kept squeezing and jiggling them around my cock, looking up at me with pure lust.
After several minutes I pulled back. “I need to be inside you, Mom.”
She nodded eagerly and pulled the tiny bikini bottoms to the side. Her pussy was shaved smooth and already dripping. I lined up my massive cock and pushed the thick head against her entrance.
It took several tries to work even the first few inches inside her. She was tight and I was huge. “Oh fuck, baby… you’re stretching Mommy so much,” she gasped. “Go slow… let me get used to that fifteen-inch cock.”
Inch by inch I sank deeper while she held her huge tits and moaned. By the time I was buried almost to the hilt she was shaking. I started fucking her with long, deep strokes, watching her massive tits bounce and slap together with every thrust.
The risk of someone walking around the corner made it even hotter. We kept it as quiet as possible, but the wet sounds of my huge cock stretching her pussy were loud in the afternoon air.
Mom came first — hard — her pussy clamping down around my thick shaft as she bit her lip to stay quiet. I kept pounding her through it, then pulled out and slid back between her tits for a few more strokes before pushing back inside her.
We changed positions. She got on all fours on the lounge chair and I took her from behind, gripping her hips and watching her huge tits swing heavily beneath her. Every time I bottomed out she let out a muffled cry.
“Fill me up, baby,” she begged. “Cum deep in Mommy’s pussy with that big incest cock.”
I couldn’t hold back anymore. I slammed deep and exploded, pumping what felt like a gallon of cum inside her. She came again at the same time, her pussy milking every thick inch of me.
We stayed like that for a long minute, breathing hard, my still-hard cock buried inside her. When I finally pulled out, a thick stream of my cum leaked from her well-fucked pussy and dripped onto the lounge chair.
Mom turned around, scooped some of my cum onto her fingers, and rubbed it over her huge tits. “We’re not done yet, baby,” she whispered with a wicked smile. “The party’s still going… and Mommy wants that fifteen-inch cock again later tonight. In my mouth. Between my tits. And back in my pussy.”
She retied her bikini top as best she could, the tiny triangles doing almost nothing to contain her cum-smeared breasts. I pulled my trunks back up, my massive cock still half-hard and obvious.
We walked back to the party separately, hearts pounding, already planning how we were going to sneak away again before the night was over.
That backyard pool party changed everything between us. What started with Mom’s huge tits barely contained in a tiny bikini ended with me fucking her senseless with my fifteen-inch cock — and it was only the beginning of our taboo summer together.
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