A mind-melting orgasm

Brianna was in the middle of her way, about to land a blow on Jack, when suddenly a wave of intense, instant pleasure swept through her. She moaned loudly and gave a large gasp, dropping to the ground and clutching her knees. Her mind began to blank out from the sensation- she'd never felt anything like it before. Jack laughed. "What's going on, Brianna?"

When the feeling passed, she panted, already tired. She glared up at Jack, hating every inch of his cocky grin. "What... what are you doing... you son of a-"

Before she finished, another one hit her, this time just as hard if not harder than before. She reeled over, trying desperately not to moan out loud but failing. She hoped that people wouldn't hear her but that thought was soon gone as pleasure swept over her again.

When the feeling faded, she immediately got up and ran towards Jack, having noticed that he had tapped his hand to his watch every time. She tried to catch Jack off guard, and she did- he looked at her, surprised, and tried to reach for his watch. She knocked his wrist out of the way and lifted her foot, kicking him in the leg. He snarled in pain, brushing her aside. But she wasn't thorough enough. Brianna watched in horror as Jack pressed his watch at lightning speed, even as her hand stretched out-

Brianna came and came. But this time, as she began to calm down from the effects of the orgasm, another wave hit her. She gasped, her mind reeling and blanking out from the pleasure that she was experiencing. Every time she felt like she could regain control, another wave hit her. Vaguely, he could see as Jack grinned manically, violently pressing his watch every time he saw that she was slightly recovering. The orgasms hit her relentlessly- Brianna thought that she would lose her mind.

Finally, after a number that she couldn't count, Brianna lay there, utterly defeated. Somewhat funnily in her situation, there still wasn't anyone around her. Did Jack do something to her voice? Brianna tried to lift her arm, but she was completely exhausted.

Jack's face loomed over her. He was smiling. Brianna looked at him, trying to be defiant, but understood the situation that she was in.

"Well, then Brianna, have fun in class. Be sure to expect something for your last period. And I'll expect to see you at the front of the school and coming to my house right after," he said. Brianna's eyes widened.

"No... you can't-" she said, but Jack ignored her and walked away.