Monk: Ah, this brings back memories. Sitting in the principal's office.
Natalie: You? I can't picture you being sent to the principal's office.
Monk: I wasn't sent. I used to go there on my own. To report on the troublemakers, I was Mr. Campman's eyes and ears. That's what he called me.
Natalie: Ummm, so you spied on other kids
Monk: I was keeping the study hall safe for people like you. You're welcome.