Zach Galifianakis Talks 'Hangover' Penis Retraction

Zach Galifianakis visited Conan Thursday night to talk about jock straps, penis retraction and his mom's reaction to 'The Hangover.'

"She was like, 'We're so excited. We're going to see the movie. We can't wait, we'll call you when it's over," he said. "Three hours later, 'Hi son, it's your father. Your mother had some issues with the film.'"

Zach said that he was reluctant to don just a jock strap in the movie, but director Todd Phillips coerced him into it by pointing out Will Ferrell's willingness to do the same.

He also described his penis's evolutionary response to being exposed to a Bengal tiger. "I didn't realize this but what happens to a male human when you're around a man-eating tiger, the thing that makes you a male doesn't shrink," he said. "It goes into your small intestine." When he sparred with Mike Tyson, he said, it went all the way up into his throat.

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