"Wow, you sure don't know a lot about security guards." He doesn't refute the charges against him. When you're stuck with a boring job like school security guard, there's not much else to do.

All right, it's not that boring at the moment. But old habits die hard, and it's being non-boring in a really annoying way right now. Anyway, he continues to follow her, hoping that this is not going to end with him in excruciating pain, because he really hates when that happens.