The Mentalist, Season 3

Jane:
You just put your hand on me.

Drew Yost:
No. I mean, yes, but --

Jane:
Yes. Don't ever do that again.

Yost:
Or else what?

Jane:
[leans in close] You ever smell a dead mouse? Remember that smell?

Yost:
Yes.

Jane:
Well, I just now put a dead mouse in your jacket pocket, and no matter how many times you clean that jacket you will always smell that dead mouse, and you will remember that you should never have put your hand on me.

Yost:
[feels jacket pocket and immediately removes the jacket] You son of a bitch.

Jane:
It's actually just a wadded up napkin, but it has the same psychological effect. The human mind is funny that way.