Biff was about to leave his house to see Sarah when he suddenly hit his head and fell back to the floor.
"What the hell." He looked up to see a giant device blocking the exit to his room. "Where did this come from?" He wasn't sure what the machine was but it was wide enough that he literally couldn't get past it. "If I lose out on scoring tonight because of whatever this thing is, I'm going to be pissed. It was then that Biff noticed a panel on the side of the machine. It had a screen and a keyboard but nothing in the way of instructions or even a label to let him know what the machine was for.
After a few minutes of attempting to push the heavy device to the side, Biff relented and gave the panel a closer look. The screen was blank but everything he typed on the keyboard appeared on the screen with additional descriptive text. The thought of Sarah's body still in his head, Biff typed "Sarah McMillan's house" into the machine. It seemed to accept the text but a new screen appeared asking him for a date. Biff tried to type today's date into the machine but it kept giving him an error message. Unsure of what else to do, he changed the year on the display to exactly one year in the past. This appeared to work and the machine hummed to life as abnormal sounds emanated from somewhere inside the metal shell. After a distinct click sound, a metal panel opened to reveal a circular room about the size of a single person. Biff entered the room and was immediately blinded by a bright light.
He was angry at first but his anger turned to relief when his vision returned and he found himself sitting on what he recognized to be Sarah's bed. He walked around and examined everything. He had been in the room several times before but he didn't feel comfortable truly looking at Sarah’s things while she was present. Sarah was the hottest girl Biff had ever met, but he grew up trying to appease a father that chastised Biff for doing anything your typical All American male athlete wouldn't do. Even playing video games got Biff chastised for being some type of pussy. As such, Biff always felt uncomfortable around Sarah's clothes, like merely seeing a loose skirt would result in his father beating him for being a sissy, even if the skirt belonged to the girl Biff had been fucking for the last six months. He resented his father for his hyper masculine upbringing but his feelings towards all things feminine were so deeply ingrained in him that even sitting on Sarah's bed alone made him uncomfortable.
Today was different though. Something about Sarah's closet drew Biff's attention. No matter how hard he tried to look away, his eyes kept darting across the room at it, like it was tempting him. After a few minutes of fighting back the urge, he relented and walked over to examine it closer. It was full of clothing of all shapes and sizes. Feminine sizes, mind you, but the myriad types of clothing fascinated Biff. Everything he owned was simple, plain, generically manly. Sarah had so many options when choosing what to wear, it almost made Biff jealous.
Somewhere near the back of the closet was a simple navy tee shirt that called out to Biff. It was as generic as a tee shirt could be, with the exception that its fabric was cut in a way that accommodated Sarah's large chest, something Biff never considered when choosing his own clothes. He picked up the shirt and examined it closer. It felt both soft and... familiar. He was confident he hadn't seen Sarah wearing the shirt before but he had a faint memory about it. The memory seemed fragmented... fluorescent lights, a faintly floral scent, a mirror, a mall. A changing room? Biff walked back to the bed with the shirt still in his hands. Why did it have this effect on him? He continued to ponder the feeling until a completely new memory infiltrated his mind like some kind of virus. The bed. Its sheets. God, they are so soft, Biff thought to himself. He loved curling up in a ball under these sheets, it made him feel safe.
"Fuck. What?" Biff temporarily snapped out of his delusion. He was familiar with Sarah's bed but he had never slept in it before.There is no chance Sarah's parents would let him visit if they found him sleeping in her bed some morning. But still, he not only loved the idea of sleeping in Sarah's sheets, but he was certain he remembered being there when Sarah's parents bought them.
As Biff tried to parse through all of these foreign memories and feelings, he neglected to realize that the hairs on his arms and legs were slowly receding back into his skin and his dark brown hair was slowly turning blonde. The time machine was slowly morphing reality to make Biff fit the time period and location of his choosing. Unfortunately for Biff, the person most likely to be sitting in Sarah's room one year ago was Sarah herself.
