When you're playing a fictional character reacting to the real world, it's incredibly difficult and confusing and kind of messes with your values a bit.

[Mike Tyson] was fantastic. Well, here's the cool thing about Tyson. It turns out he's a huge fan of Old School, which was one of Todd Phillips' earlier movies. So he got to the set and he already liked Todd and he trusted Todd.

[Chickens] are very frenetic. So if you think about it and you look back in other movies, like if someone's taking a crazy bus ride somewhere and it's like, 'Oh, what makes this bus ride crazy?' There's a chicken in the aisle, or like there's a chicken in a crate. So I just think the presence of chickens makes things crazy.

It's kind of hard to win most elections on anti-family, immorality, and Satan-worship.

Improvisation is about finding the best joke or the silliest way to get something across. Improvising conflict is always fun because you can just go for it.

We did some camera tests blacking it out, we made a prosthetic with a gap in it, but that made me look like a donkey, so I vetoed that right away. And then I just finally called my dentist and said, 'You know, I've had this implant for 20 years. What's it involve in taking it out?' And he said, 'It's actually not that big a deal. We can do that.' So we took it out and I was toothless for three months, for the run of the movie [ The Hangover] .I take my job very seriously.

When you're in New York City or Los Angeles, even if you're not dealing with show business, there's still this sense that it's the center of the universe. And I think that's a really dangerous, limiting mindset.