The Airhead.

Missy Fields was a classic "blonde," and probably his best bet since she'd have the weakest willpower. Trying not to miss too much of the lessons, William concentrated on her and "suggested" that her nose itched. A few seconds later, she reached up and scratched her nose.

It worked. Oh God, it worked. William looked down at his desk, breathing deeply. 'Okay,' he thought, 'I don't want to attract attention. Just act natural.'

For the next several minutes, he tried various suggestions on Missy, all with success. Near the end of class, he suggested to her that her panties were uncomfortable, and tried to get her to take them off right there in class. Missy fidgeted, as William intensified his message, but he wasn't able to keep it up. It felt like his thoughts were getting tired, and he had to quit.

As class let out, he still felt as if a part of his mind was still too worn out to do anything.

The next day, he felt fully rested.