He picks up

After Adam picked up the phone, the door behind him opens. His teacher, Ms. Muller took his smartphone away before he could say anything. "Adam," she said with her usual, annoying voice, " You know the rule, no phones in school. Come to my office after your course"

When she left, Adam sighed. He was happy that she didn't saw him jerking off in the broom closet, but also annoyed that he had to go to hat after math. He didn't even know who called him, but that didn't matter yet. Math was his next obstacle as he hoped that ms. Muller wouldn't look through his phone