We were both home alone that weekend, me and my older brother Jake, both over eighteen and bored as hell. I heard the shower running and figured I'd join him like we used to when we were kids, only this time it turned into something else fast.
I stripped down in the hallway, my cock already half hard from the idea, and pushed open the bathroom door. Steam filled the room. Jake stood under the spray, water running down his back, his ass tight and his heavy balls hanging low between his legs. He glanced over his shoulder but didn't tell me to fuck off.
"Get in if you're coming," he said, voice low and rough.
I stepped into the shower behind him. The water hit my chest and I reached around, grabbing his hips first. My hands slid lower right away, cupping his balls. They felt full and warm, bigger than mine, the skin smooth and tight from the heat. I rolled them in my palm, squeezing just enough to make him grunt.
"Fuck, those are heavy," I muttered, pressing my body against his back so my cock slid along the crack of his ass. "Been saving up?"
Jake pushed back against me. "Shut up and keep touching them." He spread his legs wider under the spray. I got both hands on his balls now, tugging them down, feeling their weight swing. Water ran over my fingers while I played with them, pulling one then the other, rolling them together. His cock started to rise, thick and veined, but I stayed focused on his nuts like he wanted.
I dropped to my knees on the wet tile. From down there his balls looked even bigger, hanging right in front of my face. I leaned in and licked one, tasting soap and skin and sweat. Jake groaned and braced his hands on the wall. I sucked one ball into my mouth, then the other, stretching my lips around both at once. They filled my mouth completely, heavy on my tongue. I sucked hard, letting them pop in and out while water poured over my head.
"Jesus, little brother, suck those balls," he growled. His hand reached back and grabbed my hair, holding me there. I worked them over, licking the seam between them, nibbling the loose skin, slurping loud and messy. My own cock throbbed untouched between my legs, dripping pre-cum onto the shower floor.
Jake turned around so his cock pointed at my mouth. I kept licking his balls while I reached up and stroked him, thumb sliding over the head. He thrust his hips, rubbing his balls across my face, smearing spit and water everywhere. I opened wide again and took both nuts back in, sucking rhythmically while I jerked his shaft.
After a minute he pulled me up. "Turn around." I faced the wall and he pressed close behind me. His soapy fingers found my hole quick, pushing two inside while his balls brushed my thighs. He finger-fucked me open under the running water, stretching me, then lined his cock up and shoved in. The stretch burned good. He buried himself to the root, his heavy balls slapping against mine with every thrust.
We fucked like that for a long time, water beating down on us. Jake reached around and grabbed my balls too, squeezing them in time with his strokes. "Your turn to feel it," he said, yanking them down while he pounded my ass. The dual sensation made my legs shake. His balls kept swinging forward and hitting mine from behind, a wet slap every time he bottomed out.
I came first, shooting against the tile without touching my cock. My balls tightened up in his fist and I shot hard, ropes mixing with the shower water. Jake kept going, using my hole until he was close. He pulled out at the last second, spun me around, and pushed me back to my knees. He fed me his balls again while he stroked off. I sucked them deep, and he unloaded across my face and chest, thick cum mixing with the water running down.
We stayed in the shower after, cleaning each other slow. I washed his balls carefully, soaping them up and rinsing them, feeling how they hung lower now, emptied. He did the same to mine. Neither of us said much, but we both knew this wasn't the last time. The hot water kept running while we stood there touching, already planning the next round.
