I still can't believe how fast it happened. One minute I was helping my aunt Emily move boxes in her garage on a sticky July afternoon, the next she had my cock in her mouth like she'd been starving for it her whole life.
Emily's my mom's younger sister, forty-two, thick in all the right places, with heavy tits that always strained against whatever top she wore and an ass that made jeans look obscene. I'd jerked off to thoughts of her since I was eighteen, but I never thought she'd actually want it. She was the cool aunt who let me drink beer at family barbecues and never ratted me out.
That day the house was empty. Mom and dad were at work, my cousins were at camp. Emily wore cutoff shorts that rode up her thighs and a thin tank top with no bra. Sweat made the fabric cling to her nipples. Every time she bent over a box I got a clear view down her shirt. My dick was half-hard the whole time.
"Jesus, it's hot in here," she said, wiping her forehead. She looked at me and smirked. "You're staring, kid."
I tried to play it off but she stepped closer. "It's okay. I know you've been looking at these for years." She cupped her own tits and squeezed. "Want to touch them for real?"
I didn't answer with words. I just grabbed them, feeling the soft weight, thumbs rubbing over hard nipples. She moaned low and dirty, pushing into my hands. "Fuck, finally. I've wanted this too."
She dropped to her knees right there on the concrete floor, unzipped me, and pulled my cock out. No hesitation. She licked the head once, then swallowed half of it in one wet gulp. Her mouth was hot and sloppy, spit running down my shaft as she bobbed fast. I could hear the wet sounds echoing off the garage walls.
"Goddamn, aunt Emily," I groaned. She looked up at me with those dark eyes and took me deeper, throat working around the head. She pulled off just long enough to say, "Call me Emily when my mouth's on your dick. Or call me your dirty fucking aunt. Either way, don't stop."
She sucked me like she was trying to win a prize, one hand stroking the base, the other squeezing my balls. I didn't last long. I warned her but she just moaned and kept going, swallowing every spurt while her throat milked me.
When she stood up she wiped her mouth and grinned. "My turn." She shoved her shorts and panties down in one motion. Her pussy was shaved smooth and already glistening. She hopped up on the hood of her car, spread her legs, and said, "Eat it."
I buried my face between her thighs. She tasted sweet and musky, and she was soaked. I licked long stripes up her slit, sucked her clit, pushed two fingers inside her tight heat. She grabbed my hair and ground against my mouth, cursing and moaning.
"Right there, fuck, suck that clit harder. Your aunt's cunt is so fucking wet for you." Her thighs started shaking. She came loud, juices coating my chin while she called my name.
She didn't give me time to recover. She slid off the car, turned around, and bent over the hood. "Fuck me. Now."
I lined up and slammed in. She was tight and hot and dripping. I grabbed her hips and pounded her, the slap of skin loud in the garage. She reached back and spread her ass cheeks so I could watch my cock disappear into her.
"Harder," she demanded. "Fuck your aunt like you mean it. Fill that pussy up."
I did. I fucked her deep and rough, one hand reaching around to rub her clit. She came again, clenching around me so hard I almost lost it. I pulled out at the last second and painted her ass and lower back with thick ropes of cum.
We weren't done. She led me inside to her bedroom, stripped completely, and rode me on her bed. Those big tits bounced in my face while she worked her hips, grinding her clit against me every time she bottomed out. She talked the whole time, filthy and nonstop.
"You like auntie's pussy? It's better than those little college girls, isn't it? So wet and tight for my nephew's cock. Come in me this time. I want to feel it."
I grabbed her ass and thrust up to meet her until I exploded deep inside her. She kept riding through it, milking every drop, then collapsed on my chest with my cock still twitching inside her.
We spent the rest of the afternoon in that bed. She showed me how she liked her ass played with while I fucked her from behind. She sucked me hard again and let me fuck her tits. By the time the sun went down we were both sore and sticky and grinning like idiots.
Emily kissed me slow before I left. "This stays between us. But if you want more, you know where to find me."
I still visit her place every chance I get. The garage, the bedroom, once even the kitchen table while dinner was on the stove. Every time it's raw and nasty and exactly what we both need. Aunt Emily knows exactly how to make me lose my mind, and I know exactly how to make her scream.

That's our secret. And it's the hottest thing I've ever had.