You were at your university's library but fell asleep

Later a girl woke you up

"Hey, wake up, you shouldn't sleep here" the girl shook you

You did and realised you should get going, you reached for your phone to not find it

"Hey, can you give me your phone?" you ask the girl who woke you up

"Give you my phone? You're silly, phone booths would be too hard to carry!" she just laughed

You were confused and looked around, it didn't seem right, everything seemed very 80s style?