I make decisions to do movies based on the cast. I'd just been working with Zach Galifianakis on 'The Hangover', and I was thinking, I've got to find something to do with this guy immediately.

My dog's a gentleman.

There's such an awkwardness to most heterosexual male relationships. You see women who are friends, and they kiss each other good-bye, and they're just so much warmer with each other. But there's this thing with guys where, even between best friends, there's a standoffishness.

I grew up raised by my mom and my two sisters, so I never had a real male influence in my life. I never really understood heterosexual male relationships.

I think comedy directors tend to feel a need to justify the bad behavior, and I just never think that. I like bad behavior, I've always liked bad behavior, I'm a fan of bad behavior, and I don't think you have to justify bad behavior.

My movies before tend to be just funny. But it wasn't a conscious thing I was looking for at all.

You set the tone on the set that you want to see in the film.