A powerful thirst. For months after discovering the joys of suckling from my Sophia, I didnt want to share my milk or hers with anyone else. Both of us were producing gallons for each other to suckle. There were days when Sophia was forced to call in sick (with me listening to her excuse, looking up at her, latched on to her big brown nipple and contentdly suckling) simply because our milk flows were so strong they made our heavy breasts even more so from the sheer weight and volume of our milk. This morning was no exception. Normally we would awake from a fitful night with our nipples slightly sore and shiny with each others saliva from all night suckling. The amount of sweet,hot milk produced from both of our breasts forced us to suckle 6-8 times a night, or roughly every 2-3 hours. Even with the nearly constant suckling, the volume of our milk in the mornings never ceased to amaze us. With Sophia working as a lactation consultant at the hospital, it was important for her milk to be under control when she went to work to help other young women with their milk production. Since she often had to pump or massage their breasts to get their milk to flow for their newborn children, it was important for her breasts to be near empty so as not to shoot jet after delicious jet all over the suprised moms that she coached. Unless they were lecherous greedy milk-guzzling sluts like me, most women would have been disgusted and probably would ask for someone else to help them with their lactation concerns. However, today would not be the day for her to go to work. My job as an researcher for a law firm had caused me to be away from home for nearly 2 nights this week, and Sophia had overtime shifts which caused her to be away for some nights as well. We had both been almost too tired to suckle properly the entire week and the pressure from the unaccustomed milk build up in our huge tits had become almost unbearable. Both of us had ruined our clothes at work because of milk letdown over the build up (luckily we had brought changes of clothes). As I sat up in bed from a fitful sleep, my 48ddd breasts sloshed heavily againts my chest, painfully filled with milk that hadn't been suckled properly. "OwwwH" I screeched as I half sat up and had to lay back from the milk weight. My cry of engorgement pain aroused my equally engorged Sophia. Her 46ddd breasts were even more engorged then usual as she sat up with surprise at my cry. Near tears from the engorgement, I simply hefted my already leaking breasts towards her gaping mouth. "O.K. baby, I'll suckle these heavy milk laden beauties, but we;ve only got about 25 mins or so", she replied, licking her full lips in milk suckling anticipation. "With the gallons we both have to suckle ,you'll be lucky to leave this bed in 25 hours!" I quipped, squelching her protests with my large brown dripping tit. Her lips and tongue immediately latched on to my large nipple with an instant reflex. Within less than a minute, my flow of pent-up milk flew into her thirsty sucking mouth. After 2 minutes, my left boob shot had shot so much milk into her parched throat that it dripped like a burst hydrant down her face and chin, pooling in large staining streams in the cavern created by her cleavage. Her own boob was starting to leak, so reluctantly I pushed her suckling lips away from my dripping tit to inhale her engorged right boob. Hefting the super heavy milk jugg to my parched lips and throat, I suckled as though I had been in the desert for weeks and had just discovered the most delicious milk oasis ever. Sophia's sighs of relief at releasing some of her gallons of milk and purrs of pleasure at my suckling spurred me on to suckle harder to induce more sweet creamy milk to pour out of her heavy boob. Soon, jet after jet of hot boob milk filled my throat to overflowing. The residual milk flowed down my face and into my own grand canyon of cleavage between my still engorged boobs. "Oh, suck baby suck that big fat tit ! Oh, ohmygod! You're making my boobs flow like a fucking river!" Sophia's gutteral, lusty and raunchy speech propelled me to switch to her juicy engorged left boob after 15 mins of suckling and gasping for breath from the milk assault. After sucking the sweet creamy milk from her other heavy jugg, my head was lifted by both her hands so that she could relatch onto my right boob. This scenario continued for almost 3 hrs before we could gain control and keep our thirsty mouths off each others heavy tits. Our boobs were a mess, covered with tiny teeth marks from being suckled and bitten in fits of milk drinking lust, as well as milk residue from the excess that dripped from our mouths when they couldn't hold any more of our milk. The saliva we slathered onto each others tits and breasts glistened in the sunlight, as well as the juice which gushed from our vaginas during our suckling frenzy. We both had multiple orgasms just from suckling each others engorged breasts, and now the time had come to eat each other out to relieve the tremendous pressure on our swollen,throbbing clits. As we nestled into a hot, lenghty and slurpy 69 session, our still milk-engorged breasts grazed each others bodies, leaking sweet slurpy milk onto other parts of our bodies to be slurped up when we finally finished licking our wet pussies and sucking our hard blood engorged clitorises. It would be nearly dark when we finally left the bedroom to pee(in each other,: Sophia had almost as much dark yellow urine to give me as milk- I drank so much of her piss as she squatted over my face I nearly drowned- I was so full I leaked piss before I could position my self over her beautiful face to let loose my own amber piss river- I loved looking down on her as my nearly 4 minute piss dripped out of her mouth and all over her heavy milk filled tits- We would trade squatting and kneeling in front of our pussies to drink piss for almost 2 more hours-only leaving the bathroom after licking every pissy drop from every body part covered with urine). After our piss drinking session, Sophia and I would finally eat something other than each other-usually dairy products, low fat cheeses, 2% milk, low fat ricotta-anything that would overfill our engorged breasts. Then tv ( usually Robin Byrd, an x-rated New York talk show host who often featured big boobed porn starlets whose breasts she would suckle at the end of each program) and then back to bed for frenzied milk-suckling. Ahhhh, its amazing what you do when you've got a powerful thirst!