Anna sauntered back towards the bed, her hips and thighs jiggling and her full breasts swaying from side to side. She got to the bed, paused, and then turned and walked to the reclining chair by the window. I watched as her round ass rose and fell with her exaggerated steps. She leaned forward, placed her hands on the back of the chair, and stuck her plump ass out as far as she could. She flipped her hair to the side as she turned to look back at me over her shoulder with a sexy smile on her beautiful face. Her heavy breasts bounced as she turned and then hung down beneath her, round and impossibly full. "Come and fuck me." The words slid sweetly from between her full, pouty lips like honey and hit my ears like a ton of bricks. I was finally going to fuck my beautiful wife from behind! I was so thrilled with the prospect that it almost didn't matter that I wouldn't be using my real cock. I stood and walked toward her nervously, the fake penis jutting from my pelvis and bouncing obscenely. Anna watched over her shoulder as I approached. I stood behind her for a full minute or two taking in the sight before me. My wife's feet were spread apart slightly and planted firmly on the floor. Her thick, succulent thighs gave way to her curvy, round hips and her ample ass. I could just see the folds of her pussy below her hanging ass cheeks. She wiggled her butt subtly and the snow white orbs of tender flesh wobbled back and forth, even after she ceased her movements. Her ass was free from even a hint of cellulite; her cheeks were round and smooth. Her ass was so full that even in this bent position there was a slight crease where it met the small of her back. Her back dipped down at her slender waist before rising again under the wavy locks of her long dark hair. I gripped the base of the strap-on for the first Time and was surprised by how realistic it felt. I looked down at the large cock in my hand. I was standing a foot behind my wife, but the long, thick dildo nearly touched her. It had to be eight or nine inches long, at least. I stooped down slightly and stepped forward, squeezing the dildo between her thighs. I rubbed it back and forth along her pussy. "Chris, I don't think I'm ready for your big cock yet...get me wet first." I pulled back and dropped to my knees behind her. Her ass was directly in front of me. I put a hand on each of her thighs with my thumbs between her legs. I used them to spread her pussy lips until I saw the pink of her slit. Her opening still gaped slightly from last night's oversized penetration. Leaning forward, I began kissing the soft insides of her parted cunt. She moaned with increasing volume and frequency as I flicked my tongue in and out, up and down, back and forth. My nose was pressed into the crack of her ass, but all I could smell was the sweet, familiar scent of her rapidly moistening pussy. After a few minutes, Anna interrupted me. "Mmmm, OK. I'm soaking wet now thinking of getting fucked from behind after so long. Get up here and give me that big dick!" I stood up and pressed the dildo against her pussy. I smacked it against her lips, eliciting a wet splashing sound. She really was wet. I teased the cock along her slit, spreading her juices along its length. "Ohhhhh," she groaned wantonly. "Stop teasing and give me that dick!" I placed the head of the strap-on against her entrance and paused. "Tell me what you want," I prodded, nervous with anticipation of what I was about to do. "I want to hear you say it." "Ohhhh, god...I want to feel your big dick inside of me. I NEED your cock deep in my pussy! Please Chris...Fuck me from behind with your huge cock!" I pushed forward and the large head slipped past her outer lips. I pushed until I felt resistance a couple inches in. That was her point of no return. I pulled back and pushed again. I worked the cock in and out of just the entrance of her pussy, never going past the point of resistance. "Oooohhhh...push it in...please! It feels soooo big, I need to have it! Give me that cock!" I had never heard her so vocal, and never so dirty. Her tongue was really loosening up on this trip. I grabbed her hips for leverage and pushed firmly against her resistance until the wide mushroom shaped cock head slid past her cunt muscle with a 'pop'. Anna gasped and clenched forward. "Oh my god!" She cried. I pulled her backwards, forcing more of the cock inside her. I continued forward, sliding about 6 inches of the dildo into her. I pulled back and she moaned again. "Ohhhh, it feels like you're turning me inside out! This is incredible!" I started fucking her slowly using 6 inches of the thick cock. My hands were on her soft, wide hips pulling her ass back and forth to match my thrusts. Suddenly, she rocked back hard, forcing all but the last inch of the dildo to sink into her cunt. She screamed with pleasure. "Aaaaaahhhhggggg!!!!!" Her round, soft ass cheeks were pressed against my pelvis. This is it, I thought with excitement. This is what it's like to fuck doggie-style. I moved my hands to her fleshy backside and kneaded her ass. I rocked gently against her, grinding 8 inches of cock inside her tight, wet pussy. She was still unable to squeeze that final inch into her moist cunt. "Is this what you wanted?' I asked, squeezing her ass hard. "You want me to play with your big ass while my dick is buried inside you?" "Oh, god, yes! This is what I've been dreaming of!" At least we both agreed on that. I dreamed of having my wife like this just about every Time I saw her wonderful ass. Who cared if it wasn't my cock?! This was as close as I could ever hope to get, and Anna was definitely enjoying it more this way. "Your ass looks so good, babe. I've literally had dreams about this." I pulled the cock out of her slowly until just the tip was in her, then slammed it back in with one motion. She gasped and cried loudly. "Ahhhh! Your cock is so big! Fuck me with your huge penis!" She hissed through clenched teeth. And fuck her I did. In and out with long, hard, fast strokes. I was mesmerized as I watched 8 inches of cock slam in and out of her wet pussy. Each Time I drove into her, her ass slammed against my stomach and jiggled wildly before bouncing off again. The motion sent ripples over her soft flesh all the way up to my hands gripped tightly to her slim waist. My own cock, my real cock, swung wildly back and forth in its plastic cage as I pounded her. My heavy aching balls slapped against my thighs with a sharp pain on each stroke, and my cock cage grazed my wife's clit as it swung forward. I knew my cock must be leaking precum like crazy, but with Anna's copious amount of juices running out her pussy and down my groin, I couldn't tell her moisture from my own. Anna began bucking against me more and more, and I knew she must be close to cumming. I could read the signs, even if she had never cum from penetration alone. "I came to return your chastity key, of course. And Anna promised me a show, but I didn't expect that!" Lisa walked towards us, my key in her outstretched hand. Anna turned, sat on the chair, and took the key from her. She grabbed the dildo still attached to me and used it to pull me closer. The dildo lay against her cheek and across her shoulder as she reached around me to unfasten the straps. She tossed it aside and gently cupped my swollen balls.