My sister Lena and our cousin Mia had me pinned on the old leather couch in the basement, both of them naked and glistening under the single bare bulb. Lena's hand was already wrapped tight around my cock, stroking hard and fast while Mia straddled my chest, her wet pussy grinding against my mouth. "Lick it, you filthy fuck," Mia growled, grabbing my hair. "Taste how turned on we get thinking about what we're gonna do to this dick."
I obeyed, tongue pushing deep into her while Lena worked my shaft, her thumb rubbing the head with every stroke. They had been teasing me for weeks, dropping hints about "making you ours forever," and tonight they finally told me straight: they wanted me castrated. No more balls, just a smooth, useless cock for them to use however they wanted. The idea made me throb harder in Lena's fist.
Mia came on my face first, flooding my mouth as she moaned my name. Then she slid down, took my cock from Lena, and sank onto it in one rough motion. She rode me like she was trying to break it, hips slamming down while Lena sucked on my balls, biting just hard enough to make me jerk. "These are coming off tonight," Lena said between licks. "You want that, don't you? Want your sister and cousin to cut these useless nuts away so you can be our permanent fucktoy?"
I groaned yes into Mia's pussy as she leaned forward, grinding her clit on my tongue again. The room smelled like sex and sweat. Mia's tight cunt clenched around me every time she dropped down. Lena switched to fingering my ass while she kept sucking, two fingers pumping deep while her tongue lashed my sack. I was close, but they stopped every time I got near the edge, laughing when I begged.
They flipped me onto my stomach. Mia strapped on a thick dildo and shoved it into my ass without warning, fucking me hard while Lena lay under me, sucking my cock into her throat. "Tell us again," Lena demanded, pulling off with a wet pop. "Tell your sister you want her to castrate you."
"I want it," I gasped, pushing back onto Mia's strap. "Cut them off. Make me your eunuch."
Mia laughed and slammed deeper. "Good boy." She reached under me and squeezed my balls hard. "These are done."
They kept me on edge for another hour, trading places, using my mouth and ass and cock until I was shaking. Finally they had me on my back again, legs spread wide. Lena produced a small kit: scalpel, clamps, antiseptic. My heart hammered but my dick stayed rock hard. Mia stroked me slow and steady while Lena cleaned the area.
"Last chance to back out," Lena said, voice low and rough.
"Do it," I begged.
The first clamp bit down on my right ball. Then the scalpel. The pain was sharp and bright, but Mia's hand on my cock kept me right on the edge of coming. Lena worked fast and sure, tying off, cutting, cauterizing. My left ball followed the same way. I came hard while she finished, shooting across my own stomach as both women watched with hungry eyes.
When it was over they both climbed on top of me, kissing and licking the cum off my skin. My cock was still twitching, balls gone, the skin already starting to heal under their careful hands. Lena kissed me deep, tasting like me and Mia.

"Now you're ours," she whispered. "No more running. Just this cock for us to use whenever we want."
Mia straddled my face again. "Clean me up while your sister rides that pretty useless dick."
I licked and sucked while Lena sank down on me. She was even tighter without my balls in the way, and every thrust sent sparks through the fresh ache. They used me until we were all exhausted, then curled around me on the couch, hands gently stroking the empty space where my balls used to be.
"Next time we'll do the full penectomy if you beg nice enough," Mia murmured against my ear.
I was already hard again at the thought. My sister and cousin had taken everything and left me exactly what they wanted: a cock with no balls, ready for whatever filthy thing they dreamed up next. And I knew there would be a next time. We were just getting started.