I live in the best situation you could possibly imagine. I live with my lover & fellow slave Zoe in a dungeon where we cater to the every whim of Mistress Ivy. She took us in when we answered an ad for female slaves. We walked in the door together & the minute our Mistress set eyes on us, it was lust at first sight. All our nervousness slipped away at the vision of this tall, elegant woman dressed in a shiny red latex dress, holding a whip & wearing a seductive, sadistic smile. What was going to be required of us was to live in her home, receiving room & board. We would be on call & available to her at all times. We would be required to service her sexually whenever she desired it.  Last week after breakfast which Zoe & I cooked while wearing only skimpy little thongs, Mistress Ivy grabbed us by our collars, pointing to several dirty dishes we'd “mistakenly” left in the sink. The truth was we know our Mistress well, & we love misbehaving for the fun of getting disciplined. No sooner had we stepped out of the kitchen when Ivy's voice rang. “My toys, where do you think you're going leaving this mess behind? You're going to wash these plates till they sparkle, but first I'm going to have to punish you two.” She grabbed us each & led us into the living room. That's where the special cage is for naughty girls like us. “Get on your knees & crawl into your cage, you brats,” she ordered. Zoe & I looked at each other. We're both gluttons for punishment of any sort, & our little trick of leaving the dishes was our way of riling up our Mistress. She closed the door of the full size cage & clicked the metal lock.  I always get so aroused being placed in the cage. I held onto the bars, trying to wiggle my face between the spaces to get closer to her. Apparently Mistress didn't like that because she reached in & pinched one of my nipples hard & pushed me back, then she shackled one of my wrists to the bar with a pair of cuffs. “Just one,” she said in response to my quizzical look, “I want you to use the other one to fuck you girlfriend.” Then Mistress sat on the couch, watching us intently. With my left hand anchored to the cage I couldn't really move around, but Zoe dutifully crawled toward me. She inched closer until her pussy was right at my finger tips. I began stroking her wet slit & she moaned in pleasure. “That's right, fuck her good for me,” said Ivy, who was busy toying with her own clit while she watched us. “She take more- use four fingers,” she said, & I trembled at Zoe's wetness & Ivy's orders. I easily added another two fingers into Zoe's dripping snatch & she moaned in response. Mistress is the ultimate voyeur & often commands us to fuck each other in all sorts of ways. But today, I wasn't going fast enough for Ivy, because she stopped me while in the middle of fucking Zoe.  “You,” she said pointing to Zoe. “Get over here & spread your legs. Move your pussy as close to the bars as you can get. And you, do the same thing but get on your hands & knees over her.” And with that, our Mistress walked away to the toy chest, leaving us writhing with erotic anticipation.  Mistress Ivy had returned with a strap-on, lube & her favorite crystal studded riding crop. She settled herself just outside the cage, lifted the crop & brought it down with a loud slap across my sweet spot. Her smack burned, but also made my pussy throb. Ivy added some lube to the massive latex cock & Zoe gleefully took it as Mistress worked it into her slippery cunt. Zoe spread her legs as wide as possible to make sure she could take every inch as our nipples brushed against each others. Ivy continued to fuck Zoe's twat, twisting & pushing the slick toy until it finally was all inside her. Zoe bit her lip trying not to cry out with joy. Ivy laughed wickedly, commenting how Zoe loved getting fucked by very large objects. i let out a small giggle, which quickly subsided when Ivy brought the crop whizzing through the air, landing it perfectly against one ass cheek then the other.  As she continued to simultaneously fuck & smack us, I was rattling the handcuff against the metal bars. The noise was soon joined by our moans as Ivy made us both cum at once, Zoe with the thrusts from the huge strap on & me by sliding the crop up & down along my wet slit. Our Mistress kissed us through the bars on our heads & allowed us to recover. When she finally let us out, our “reward” for taking our punishments so well was a chance to lick Mistress Ivy's sweet, wet pussy; each of us alternating between her hard clit & flowing cunt until we'd made her cum multiple times.