Something was definitely wrong, but she just didn't know what.
Sarah looked from one side of the hallway to the other. There was Melissa and Jessica ... weren't they cheerleaders? Sarah shook her head. No way. Melissa was a major nerd and Jessica was a geek. She looked towards the other side of the hall. There was Tiffany. She was a cheerleader, right? Sarah shook her head again. Where was she getting these thoughts from? Tiffany wasn't a cheerleader. She hated all that stuff, being a total tomboy. Some people even suspected that the girl was a lesbian. Sarah's gaze drifted over to Amber. Now she was a cheerleader, right? She nodded. Yeah, Amber was definitely a cheerleader, as was the girl standing next to her - Nadine. Wait, Nadine wasn't a cheerleader. Was she? Sarah watched as Amber and Nadine gossiped to each other, just like Sarah always remembered. She scratched her head in confusion. Why would she think that Nadine wasn't a cheerleader? She didn't know.
At the far end of the hall, Sarah spotted her boyfriend Biff. Wait a minute, she thought. Boyfriend? Biff isn't my boyfriend. Why would I think that?
She was so confused.