Paula's plan

Paula leaned over to Tanya, "Read every note I pass you," she whispered, "and follow the instructions I write you to the letter!"

Class got underway. Tanya tried her best to pay attention to the lecture, but her mind was racing about what was going to happen to her. Paula slipped a note onto her desk.
Tanya opened it and read it. "Tanya, after you read this, excuse yourself saying you have a bad case of the runs. Go to the restroom and enter a stall, but don't lock the door or close it all the way. Finger fuck yourself as you fantasize about Cody licking and kissing you all over. As soon as you feel yourself about to orgasm, stop and return to class. Do not clean up. Do this in every one of your classes. Meet me after school at my car."

Tanya gulped. She raised her hand. "Yes, Tanya?"

"I have the runs. May I be excused?"

Her classmates laughed, but she was excused. She headed for the nearest girls restroom.