The Mentalist

Patrick Jane:
How'd you know it was me that graffiti'd the bathroom?

Principal Snyder:
A student told me.

Patrick Jane:
Well, that's strange, 'cause it was during class, and there was no one else in the bathroom, 'cause I checked.

Principal Snyder:
Well, somebody saw something, didn't they?

Patrick Jane:
Mm. You saw something - on your unauthorized security cameras.

Teresa Lisbon:
What?

Patrick Jane:
He has unauthorized security cameras hidden in the bathrooms. It's a little creepy, huh?

Principal Snyder:
I don't know where you are getting your information, but it is simply not true!

Patrick Jane:
[Opens a cupboard revealing the video feeds] Oh! Oh! Hello! Pervy perv perv!