Rachel and Morgan watched this happen and their own nipples got harder. Then Rachel started to fell the effects. She looked in shock as her pussy closed up and the skin molded together. It then began to droop forming a sack. Out of the molded pussy, Rachel began to grow a dick. It was six inches long and two inches thick. Just as it had happened with Shelby, Rachel began to play with her new body part. Also like Shelby, it was incredibly sensitive. She had barely pumped it twice before it started to spasm and blow it's first load. Seeing this made Morgan's nipples so hard that they started to hurt.
It was Morgan's turn to fell the secondary effect. Her chest began to feel even heavier than before. She watched as her breasts began to grow again. They grew until they were so large that they hung halfway down her thigh. She used both hands to lift one of her gigantic boobs. They were still natural. She began to lick and suck her massive chest mounds.
Seeing each others enhancements, Shelby and Rachel came to Morgan and laid her down on the ground. Morgan's humongous breast immediately fell to her sides where Shelby and Rachel both hugged one. They licked them in a way that made Morgan's pussy wet. Rachel stopped hugging the breast and gently pushed Shelby onto her back. Rachel's new dick was pushed into Shelby's pussy almost causing it to fire another load. Morgan lifted her tits and laid down on top of Shelby. Morgan's breast fell onto the table next to Shelby. The outside boobs were grabbed by Morgan who began to squeeze them in rhythm with Rachel's pumping. Rachel was squeezing her own tits at the same time. Morgan started to suck on Shelby's center breast while Shelby was kneading Morgan's massive boobs.
Just as they had earlier, they reached their orgasms together, but the drug kept them wanting more. Rachel pulled her dick out of Shelby and inserted it into Morgan. Morgan was turned onto her back while Shelby sat on top of her breasts. Shelby shoved her pussy into Morgan's face and felt the pleasure of her tongue. Rachel leaned forward enough to start kissing Shelby. Again they reached their orgasms, but they still didn't stop.
Rachel laid down on the table and Morgan impaled herself upon Rachel's dick while her breasts rested on Rachel's stomach. Shelby sat by on Rachel's breasts in a way that would allow her to like Shelby's pussy. Shelby and Morgan began to kiss. Their tongues rubbed together while Morgan squeezed two of Shelby's breasts. Shelby grabbed the third and kneaded it for all she was worth. They reached their third orgasm when a strange feeling came over them. Morgan felt Rachel's dick pulling out of her, yet she was sitting on top of her. Rachel's dick shrunk and reverted back to being a pussy. Shelby's middle boob seemed to shrink back into her chest as her outside boobs came back together. Morgan's massive breasts began to shrink. Once they were back to the first stage of the drug, their breasts all returned to normal size. Kara walked back into the room and asked how the sex was. Shelby, Morgan, and Rachel looked at each other and in unison turned back to Kara. "We'll take it."