Getting up from the floor, Elizabeth slithered over to the boxes again, and opened the blue box. "You know..." she said with one head. "I could have ssome fun with more of thisss," she finished with her other head. Taking out the refilled Gemini potion and the measuring cup, Elizabeth noticed that half a dose of it was enough to give her four arms and two heads. To sate her curiosity, she decided to try a higher dose in hopes of duplicating her whole upper body, so she poured out a two-thirds dose into the measuring cup.
"Welp, bottomss up!" she chorused, and drank it down with her right head. Almost immediately, she felt the same dizzy sensation as before, but now amplified twofold. Falling backward onto her coils, she surrendered herself to the arousal, and began fingering her vagina and massaging her breasts. Pretty soon, she found that it felt like she had another vagina and twice as many breasts. Looking down at her snake body, she noticed that it branched in two about one third of the way below her waist. Following the other branch, she looked over and saw a complete duplicate of her upper body, two-headed and four-armed. She now had two bodies sharing the same tail!
Wasting no time, she brought her upper bodies closer together, twisting their snake portions around each other and pulling in close. All four of her heads engaged in a pair of identical kisses, occasionally trying to turn her heads inward to make it into a clumsy four-way kiss. Tightening her coils, she squeezed her bodies together, causing both pairs of her breasts to mushroom together as she grinded her clits together and her eight arms freely roamed and caressed her body. She quickly gave into the pleasure, and shared a pair of massive orgasms.
Coming down from the afterglow...