The two of you decide to both drink more water.
And so after 2 hours of drinking the corrupted water your combined body falls into a fetal position in the middle of the lake.
You feel a tugging all around your body just before thew two of you fall unconcious.
As you come to you look at Amanda and your body and you were in shock at what you saw.
Your body was long large and muscles covered in scales your left two arms were now long extendable tentacles. While your right three arms were large mutated versions of their former scaled selves.
You looked at the lake to see your face and it looked utterly horrifying as it looked demonic with trace features of your old face your eyes are pitch black and you had 3 horns your body was covered in black scales which lead to the hips where Amanda was connected to but she looked a little more demonic with 4 EE cup breasts.
Your bodies connected at the hip to a demonic scaled horse body 13' tall.
You thought to Amanda as your brains were also connected together "Why dont we ________"