He picked up on some changes.

"Jen, did you change clothes while I was gone?"

She looked him over, puzzled. "No, why would I do that?"

He frowned. "You're not wearing the same clothes you showed up in."

She looked down and saw that she was now wearing yoga pants with a sports bra. She jumped up in surprise. What the fuck?

"Mark, I think something weird is happening to me. I think I've been, like, losing time or something." She was starting to panic. "I did something kind of stupid, I think."

She explained the situation with the study pill to him. When she finished, he looked furious.

"What the fuck, Jen? How could you do that? You have no idea what was in that pill! It could have been arsenic or PCP! You could have given yourself brain damage!"

She shrunk back from him. His anger was like a slap to the face. "I- I needed something to help me study! And it helped, look how well I'm doing!"

He glared daggers at her. "I don't care how well you're doing, it's doing weird shit to you. It's got you doing your makeup and changing clothes in the middle of a study session!"

"Mark, be honest. When would I have had time to do my makeup? Where did I get my new clothes, or put my old ones?"

He sputtered. "But it's not like that stuff just materialized on you! It's a fucking pill, not a magic potion!"

She shrugged. "It makes no sense, but all I've done since I got here is study. Whatever's going on, it seems to defy explanation."

Mark groaned. "Great, now I gotta deal with this shit. I've got no chance of passing this exam."

Jennifer thought for a second. "Well, there's one option. You could always, erm... you could take a pill too."