After a lot of uncomfortable shimmying, Biff and Sarah managed to pull the nightgown off without completely destroying it.
"What do we do if that happens again?" Bill asked no one in particular.
"I'll go to the store after school today to buy some new clothes in my mother's size. That way you can cover yourself without my real mother noticing that her clothes are missing."
Biff was frustrated. "That doesn't solve the problem. What if I change during school today? What if I change every day? My parents will be highly concerned if they find your mother sleeping in my bed one night."
"Don't you get mad at me. I didn't do this to you! Do you want my help or not!"
Biff sighed. Sarah's idea was better than nothing and wearing a set of clean clothes would make him feel better if the transformation happened again.
After an otherwise uneventful day, the couple rushed back to Sarah's home. Anxious, they half-heartedly attempted to complete their homework while they waited for the sun to set. Between conversations, Biff attempted to nonchalantly adjust his clothing to make sure they still fit properly. Sarah caught him checking his chest for breasts on two occasions but she decided it was best not to mention it until he started to calm down.
Sarah smirked at Biff when the couple noticed that the sun had started to set. "How are you feeling, mom?"
"Don't joke like that. My life will be completely destroyed if I have to turn into your mother every night! Let's keep an open mind and wait this out."
Just then, Biff's whole body started to itch. While the sensation was somewhat familiar, it was distinctly different than before. His bones felt like they were compressing and Biff's eye-line appeared to slowly lower. His tightly cropped hair shot out from his follicles and long jet-black strands started to crowd his vision. As he pulled it aside, he noticed that his fingers had become significantly more petite and pale. His new skin had an almost porcelain appearance.
"I know you!" Sarah yelled with a mixture of excitement and surprise.
"No shit!" Biff retorted with an uncomfortably high-pitched voice.
"No, I mean, I know who you've transformed into and it's not my mother!"
Biff took a step towards Sarah's mirror but immediately fell forward onto the ground. Biff was a big guy and although his last transformation made him female, his advanced age meant his limbs were still roughly the same length. His new form was at least a head shorter than he was used to and his feet felt noticeably small.
Sarah pulled Biff to his feet and helped him to the mirror. Unlike Sarah, Biff didn't recognize the girl looking back at him. She was a petite girl with long black hair that laid on the square of her back. She looked younger than Biff and Sarah, but not by a significant amount.
"Who am I?" he asked.
"Her name is Zoe. She is Jon's younger sister. I think she goes to school with my sister."
"Sick! I don't want to be related to that dweeb. Do you think he has something to do with all of this?"
