The Mentalist, Season 5

Jane:
Your brow is furrowed and you have that squinty look in your eye. You want to talk to me about the whole foot fetish thing that the catholic school girl in you tells you it's not necessarily appropriate.

Lisbon:
You're right. I don't get it. I can't wrap my head around it.

Jane:
I mean, "fetish" is a strong word, but everyone has that thing. It's just human nature.

Lisbon:
I don't.

Jane:
Oh come on Lisbon. Don't deny yourself that freedom. There's definitely something out there that works for you, something that flips your switch. Like turtlenecks.

Lisbon:
You're right. It's inappropriate. Good night!

Jane:
Turtlenecks it is.