Quote from Natalie in Mr. Monk and the Red Herring
Adrian Monk: Wait a minute, what? Wait, Natalie. Wait a second. Wait. Here's the thing. Uh, I can't lie. Uh, I'm not good at it. I got lucky with that Tic-tac thing. Natalie: Are you a man? Adrian Monk: Am I... Natalie: Are you a man? Adrian Monk: Yes. Natalie: Then you can lie. That's what men do.