Note: This story was dynamically reformatted for online reading convenience. Testofull - part 2 (Now they've almost got it right, he tries modifications and then it's the weekend.) Ron tried the compound the next day and proudly came in the next morning looking totally shagged out. "OMG!" he cried when he first saw me. "She wouldn't let me sleep all night. And that damned drug kept me as hard as steel." I laughed. "I know what you mean!" I'd told him about the fun I'd had with Tanya on the drug, but not that his wife May had also experienced its power with me. Now she had found out it also works with her husband. Awesome. "I think we need to tweak it a bit so that it doesn't last quite as long. Otherwise there will be too many sleepless guys around," giggled Ron. "Yea," I agreed. "I think I know just what to do." Another day's work and we'd synthesised a very small batch of a new compound. "Who's going to try this one?" I asked him, expecting him to want to try it first after his last experience. "No, you go ahead," he offered. "I know May's totally exhausted after last night. She'll not go for it again for a couple of days," he assured me. "OK. I'm more than happy to try the new compound first. I had a fabulous time with Tanya and I'm sure she'll be up for another session. And this version is slightly milder I expect" "Anyway, I have a meeting tonight," Ron added. "Will be out quite late. Guys only, so best not to be too horny," he chuckled. I took the drug before leaving the lab, as we drank a beer to celebrate our invention. Ron was as convinced as I was that this would be a real money-spinner. He went home to get ready for his meeting. I arrived at the house to find it empty. Neither Tanya or Candy were home. However, the drug had works its effect already and I had a monster of an erection, with a strong feeling of absolute lust. To try to calm down, I stripped off and went for a swim, slipping into my board shorts on the way to the pool. I must have swum 50 laps before I heard Tanya's voice calling for me. "Sorry, darling. Had to rush to the shops. Sorry I wasn't here for you." She grinned wickedly as I lifted myself out of the pool with my hard cock clearly showing. "Can we?" I suggested. "OMG, yesssssss," she moaned. "If you're anything like the last time, I want you..." She rushed off to the bedroom, taking off her clothes as she ran. I managed to pull of my board shorts and then I was able to stand at the door to our bedroom and watch her as she lie on her back, opening her legs invitingly for me. "Get it in me!" she cried, pulling apart her pussy lisp and letting me see how wet she was already. I immediately clambered between her legs and aimed my steel cock at her. She groaned even before I plunged in and orgasmed almost instantly. Then it didn't take long to get her going again, and then again. After her 4th orgasm, she stopped me. "I want to ride that pole!" she giggled, pushing me away, then jumping across me as I lie down in her place. Within seconds, she'd impaled herself fully on my hard shaft and was riding me like there was no tomorrow. She just came again and again, now enjoying herself even more as she was in total control. I was going to last forever at the way this drug was working, and pleasuring women was going to be such a joy. When she finally went all floppy from the enormous number of orgasms she was having, she giggled uncontrollably for several minutes. "You know May told me about a ride she had on some sort of machine." "Called a Sybian?" I asked her quickly. "Yes. That was it. A Sybian. Anyway, she said riding it was awesome, and she couldn't stop orgasming. Almost like that! I'd luv to call her and tell her I'v just ridden a human Sybian." We both laughed as she climbed off my cock, which still remained rigid. "May's on her own tonight," I warned Tanya as she picked up her phone. "You might tempt her to visit!" I was joking, but thought it could be even more fun with the two of them. "Hello, May," Tanya was saying into the phone. "Yes. Of course. No, we've been at it again. I rode him this time and I just couldn't stop. At least not until I was exhausted. Yes. Just like your Sybian. Your what? No! I don't believe it. Well, don't waste it. Come over and join us. He's got more than enough for me and I'd luv you to share him with me." Here was my own wife inviting my lover over to share my cock. Wow! What an evening this could turn out to be. Tanya took up the phone again. Hello, sweetheart," she cooed into the phone. "Yes, Dad and me are having a special evening tonight. Can you stay over at Sara's? Yes I thought you'd love that idea. OK see you tomorrow. And thanks!" "So that's settled. We can have a threesome evening!" She looked very satisfied with her suggestion and immediately climbed back onto my cock for another ride. She was orgasming violently over and over again when we heard the door open. May had taken the initiative and walked straight in, probably guessing that Tanya wouldn't want to stop - at least not just yet. May walked slowly into the bedroom, gasping at the sight of Tanya enjoying yet another orgasm and thrashing wildly about on top of me. She walked over to the bed and immediately threw off the top and shorts that she'd been wearing, now totally naked and stunningly gorgeous, she first offered her lips to Tanya. I gasped in wonder as the two girls kissed passionately. Tanya saw my look and looked down as they broke the kiss. "You don't think we girls let you guys have all the fun?" she giggled, pulling May against her again for another deep kiss. May's hands roamed all over my wife's gorgeous breasts and squeezed at her hard nipples gently. "Oh and May's told me all about how good you are with her - I was almost jealous until you found this thing that's got you going." May broke away from Tanya and lie beside me on the bed, sliding her lovely warm body against mine. We kissed, deeply like the lovers we had become. Tanya, still impaled firmly on my hard cock, murmured her approval and leaned down to join in. The three of us swapped kisses for a while, with Tanya wriggling her hot wet pussy all over my cock. "Can I have a turn now?" asked May of Tanya, with a giggle. "I guess so!" Tanya laughed. "After all, that's why I invited you over!" The two women embraced as they literally swapped places. I tensed myself for the extreme pleasure of May's wonderful tight pussy as she positioned herself astride me. She lowered herself slowly, while Tanya helped guide my cock into its slippery home, at least for the next few minutes. May always loved this position when we had our own private sessions and pretty soon she was riding me as enthusiastically as Tanya had. Tanya was close beside me and she whispered, "I know all about your times with May. She tells me everything while we're making out together." At the thought of my gorgeous wife and sexy lover making out with each other, I felt my cock stiffen even further, although I didn't think it was possible. May tensed up too and her pussy clamped around my shaft. "Did you just tell him?" she murmured to Tanya. "He got really hard then!" The two women laughed and cuddled. "Enjoy your ride, dear May," encouraged Tanya as she slipped from the bed and left the room. May didn't need telling twice. She began to ride my cock for all she could. Her orgasms started quickly and continued for what seemed hours, each one more intense than the last. As she began to get tired, Tanya slipped back into the bedroom, wrapped in a big towel. I watched her eyes as she enjoyed the sight of our lover cumming yet again on my hard cock. She dropped the towel to the floor and put her arm round May's shoulders, nuzzling against her neck as the woman still continued to rise and fall on me. "I can't stop!" cried May. "It's just so good!" Tanya giggled. "Time for a break. You need to recover. Then you can have another turn. Go and have a swim like I did!" Reluctantly, May pulled herself up from my cock. I suddenly realised that, despite having two women riding on me almost continuously for about an hour, I still hadn't cum. In fact, I was only now beginning to feel the stirrings of an orgasm. Yet I had distinct lust feelings. This drug seemed to be pretty near perfect. All the right effects on the erection, without the urge to orgasm and with feelings that still gave the urge to enjoy the sex act. Awesome! With May's tight pussy replaced on my cock by my wife's awesomely soft and wet pussy, I groaned with pleasure. The two women embraced and began to fondle and caress each other's breasts, squeezing and pinching one nipple at a time until they were both crying with delight. They'd obviously done this before! They kissed avidly, occasionally breaking apart to look down at me a grin at each other. Tanya's orgasms began quickly and just got worse - or was it better? Soon she was crying and gasping with lust as each new burst of pleasure shot through her body. She was gushing almost every time now and I was covered with her juices. Tanya's fingers were now playing at May's clit and the two women seemed to be having joint orgasms. I could feel my orgasm beginning, still very deep down, but it gave me the idea to start to thrust up and Tanya crashed down on me. At first, my wife yelped with the change. But then she giggled and made sure I kept doing just that. May lie down beside me and began to whisper sexy things in my ear, which just enhanced my extreme feelings. My orgasm now began to take shape as definitely the best that I'd ever had. The ache became a pain which became a solid band of pleasure. Tanya could now feel the change coming over me. "He's going to cum!" she cried to May. "I'll let you enjoy it!" May got off the bed instantly and watched as Tanya almost jumped off me. Both women were in fits of giggles. Immediately May impaled herself on my cock. The tightness of her awesome pussy and the fact that she knew how to milk my cock brought me to the edge very quickly. "I'm cumming!" I screamed as my cock began to throb. "Oh, yessssssssssssss!" hissed May as the first incredibly hard spurt erupted inside her. She came explosively at the same time, hanging on to Tanya as the wild spasms caused her body to crazy on top of me. My cock spurted on and on, literally filling her to overflowing. It seemed like my orgasm would never stop. The contractions continued until I had no more cum to give, and then still kept going. It was the longest, deepest and most enjoyable orgasm of my life - until then! Slowly both May and myself managed to calm down somewhat. Tanya was kissing May deeply and the women were both laughing with the excitement of it all. "Some time soon, I'll have to get off of this awesome cock," giggled May, "But it's still hard!" "Let me see!" demanded Tanya with a laugh. May slowly lifted herself from my cock and a river of cum poured out of her pussy, all over me and the bed covers. And yes, there was my cock, still supremely hard and looking like it was ready to go again. The only problem was the extremely pleasant but warning ache in my balls that they'd been totally drained and needed a rest to recuperate and refill. "Let's all go and shower," suggested Tanya, taking a dripping May with her into the en suite. I stayed on the bed for several minutes listening to their giggling and moans as they clearly played with each other even more. Eventually, I managed the strength to stand up and join them in the en suite. They both stared at my still erect cock in wonder. "I'll explain when I get back," I assured them. They left me, still giggling and I took a deliciously refreshing shower. But my cock still refused to relax. However, I did not have quite the lustful thoughts that I'd now had for the last 5 hours. I thought that the effects of the drug might at last be wearing off. It was really proving to be the perfect one. When I'd dried myself and returned to the bedroom, the two women were entwined in each other's arms, kissing and chatting quietly. I sat at the base of the bed watching and then started to explain about the drug. They stared at me as I finished my story. "You mean it's not just because we're so sexy?" asked Tanya, with a smile. "I'm sure that if I didn't want you in my mind, the drug would not initiate anything by itself, although that's something we'll have to try before we put it on the market." I explained. "Do you think it will wear off?" asked May looking directly at my hard cock with a big smile. "If I was superman, I could probably keep going for another hour or so. That's how it feels right now," I told them. "But my thoughts are much calmer after that orgasm, thank goodness. I would have not liked to have forced either of you to continue beyond your own capabilities." "May's already told me that she was at the end of her strength when she finished with you and I must admit I don't think I could have taken any more orgasms." May nodded and chuckled. "It really was the best ever for me. If Ron starts to be like that too, I could have a fun last two days of the week." Slowly the conversation ceased and we fell into a delicious sleep together. (continued in part 3 when Dad finally interacts with some young girls) [comments and suggestions to rockyhard4uc@gmail.com] being continuedTestofull - part 2