"I think we should try the big dick pill and big load pill at the same time," Kelly said. She was driving, with Liz in the passenger seat. They had already decided that they were going to be running a trial together, and were trying to decide what combination of pills to test.
"No, we should do the endurance pill," Liz said. "Without that one, no guy is going to last long enough with the both of us."
"Ya, I guess that's a good point," Kelly sighed. "But Justin said we can only try two pills at a time. I wish we could just give a guy all of them at once."
"Justin did say that he's going to make a pill that does it all eventually," Liz pointed out. "But he needs to make sure it's all safe first. That's the whole point of this, remember?"
"Ya, ya," Kelly said. "But then we can't have a big dick and a big load."
"Do you really care about big loads that much?" Liz asked. She had never been into big loads, until quite recently anyway.
"I mean, I never did before," Kelly said. "Becky's the one that loves cum. But after seeing what Justin did, I'm kind of into it. Normal cumshots seem so sad and small now."
"Ya, I know what you mean," Liz nodded, thinking about what they had done with Justin. From the first time they had run a trial with him, he had shot big loads. But when they gave him the big load pill, he had given them a real show. And the last one, the one he had shot all over Liz's face, that had been legendary. Liz tried not to think about it too much, but it wasn't working. For the past few weeks she had been hornier than she had ever been in her life. Whenever she thought of how sucking Justin's cock had felt, she immediately felt a tingling between her legs. She knew that they would almost certainly take things even further at some point, but she was still trying to act like a responsible adult, and older sibling.
"It was so fucking hot when he shot that mega load all over you," Kelly smiled. "I mean, like the hottest thing ever."
"It was pretty hot when he shot that huge load onto your back too," Liz said, and Kelly nodded in agreement.
"That's my point though," Kelly said. "I didn't care about a guy's load before. But now that I've seen the real deal, I don't want to go back to normal guys. And we have the pills to make it happen."
"Well then we have to decide," Liz said. "We can only mix two pills right now. Obviously it's between the big dick, big load, and endurance, right?"
"Ya, obviously," Kelly nodded. "And if we don't do the endurance one it's going to last about five seconds with the both of us doing it."
"So then do we want a big dick or a big load?" Liz asked.
"I want both," Kelly huffed in frustration. "What's the big deal if we give a guy three pills at once? I mean they've all been totally fine so far right?"
"Well, ya," Liz nodded, "but Justin said not to."
"What does he think is going to happen?" Kelly asked.
"I don't know, but I think we should do what he says," Liz said. "He may be a dork, but he is totally brilliant. And this is all his show you know. So I think we should stick to just two until he says otherwise."
"First of all, Justin is not a dork," Kelly pointed out. "Maybe he was before, but not now. He's a fucking stud. He's like, a full on sex god, and he's an actual genius, and soon he's going to be filthy rich. Face it Liz, your brother is basically the total package. And once these trials are done, and he actually starts selling this stuff, he's going to be able to get any girl in the world, literally. So we should really take advantage of what we have while we have it."
"Ya, I know, and we are," Liz said, not liking the sound of what Kelly was saying. She didn't mind sharing Justin with her friends. But the thought of him ditching them all for super models made Liz jealous in a way that she had never felt before. She guessed that she would end up sleeping with him eventually, but she was trying to wait. But if what Kelly was saying was true, then maybe she ought to do it before it was too late. Justin wouldn't want to fuck his own sister if he could get literally any girl he wanted.
"We are," Kelly corrected her. "You're not. You've sucked his cock for like a minute, other than that you've just been watching. I mean, don't you want to know what that cock feels like inside of you. Cause I'm telling you, its unlike anything I've ever felt."
"I know, and ya, obviously I do," Liz sighed. "It's just still so weird. I mean he's my little brother."
"There's nothing little about him Liz," Kelly laughed. "I'm sure there was before, and you're still getting used to the new Justin. But he is anything but little."
"Ya, I guess so," Liz said. "But enough about my brother. We can't just fuck him all the time, or this will never get done. We're running a trial today remember?"
"Fine," Kelly said. "Although I don't know what the big rush is. I'm fine with keeping Justin all for us for a while longer. But you're right, we're supposed to be running a trial. So back to the big question. Big dick or big load?"
"Well, I guess I would go with big dick," Liz said, frowning as she thought about it. "But you're right, a small load would just seem depressing now."
"So would a small dick," Kelly said, and Liz nodded.
"And if we don't do the endurance pill it'll last five seconds," Liz said. They both fell silent for a moment, thinking it over. They were getting spoiled by Justin's sexual prowess. They had seen what the total package looked like, and now they didn't want to sacrifice any aspect of it.
"I say we just give a guy all three," Kelly said again. "What's the worst that could happen?"
"I have no idea," Liz shrugged. "What if we make some guy's dick fall off or something?"
"Really," Kelly said with a roll of her eyes.
"Ok, well what if the guy has a heart attack?" Liz said.
"Let's just pick a guy that would be willing to have a heart attack to have great sex with both of us at the same time," Kelly suggested. "If we give some dork all three pills, we'll be giving him an experience that's worth the risk, right?"
"Justin won't like that," Liz said. "He told us to just do two at a time first."
"Ya but Justin isn't here," Kelly said smugly. "And he does want us to try more than two at a time anyway. We're just skipping one step."
"I don't know," Liz whined.
"We won't use the big doses of all three pills," Kelly said. "We'll do the biggest dose of endurance, obviously. And then we'll just do medium doses of the other two."
"This seems like a bad idea," Liz sighed.
"Ya, but I can tell you're already in," Kelly smiled, and Liz nodded her head in defeat. "Now we just have to pick the lucky guy. Any ideas?"