At the same time Jeff's sister, Rosie, was arriving home when the changes started to happen with her. First her skin became green and covered in slime growing extra pairs of breasts, legs fusing toghether and her eyes stick out the face while the her became messy tentacles, all the while with her clothes vanishing. At last a new organ grow on her body, resting atop of her pussy. In the place of a normal human was now a teenage slug girl, craving for lettuce and somebody to mate. Her mother appeared, "Hiii Mooom" she said while she replied "hello honey, how are you?". "Fine. Hey, can we do that now?" She says with a perv smirk. "I was awating for that" She says. And on the moment mom and daughter go humping each other like horny slug women.