A penis growth formula that needs a lot of work.

K-T was feeling weird and when his mind finally cleared he could feel something warm against his thighs.

"What did you do to me?" he asked his sister.

"Well, the president of the company and most of the executives are a bunch of old, fat, small dicked losers and I'm pretty sure this exact formula was about 80% of their reasons to fund my research. Most of the dick growth **** on the market are scams and kind of surgery that can technically work is really painful and has lots of side effects." She explained.

He looked down to see that once again his dick was poking through the leg hole of his boxers, it looked barely bigger than before, maybe an inch or two which at his 9 inches size wasn't much, but there was a thing troubling him. His dick was poking out of both of his boxers leg holes. He jumped up and lowered his boxers, panic overriding what little reserve he had about being naked in front of his sister after so many times. On his crotch were two identical version of his cock, each slightly larger than the original and each with it's own pair of balls.

"What the fuck is that?" he screamed.

"Well, I have no idea. It was supposed to grow you a large cock, but from the one in place. I don't understand why it did that."

"Change it back! I have a date tomorrow, I can't go to the beach like this!"

"I'd really like to, since this formula is clearly defective. But I have not the first clue how to do it right now. I don't even know what went wrong with it, I'll have to find this before I can do anything about it. Sorry but it will take some time, there's 0 chances it is done before tomorrow, you'll have to deal with it. Now let me do a few scans of it and you can go back to your room. Hopefully it won't be more than a few days before I get this if I can focus on it."

Dejected, K-T let her do her tests and went back to his basement, even forgetting to dress back before doing so. It took him months of working up the courage to ask Lily if she wanted to spend time with him, now that she invited him he'd look like a jerk canceling the day before on a week old plan.

All he needed to do was to see if there was a chance that a swimsuit could conceal his condition. He looked down at the two hard cocks, he'd first have to get them soft again to have any chance. But before taking this in hand he looked into his closet to find some swimwear.