'The Hangover' movies have grossed over a billion dollars, and 'Part II' became the highest-grossing R rated comedy of all time.
Below are some of the craziest stories from behind-the-scenes of the movies. Check them out!
1. Mike Tyson revealed he was high on cocaine when he did his scenes.
2. Zach Galifianakis admitted he was very embarrassed with the photo in the credits where his character is seen getting fellatio in the hotel elevator. Despite obviously using a prosthesis, he hated the photo and even offered money to have it removed.
3. As it turns out, Bradley Cooper is a teetotaler. He quit drinking when he was 29 years old.
4. Lindsay Lohan was offered the role of Jade the stripper in the first movie, but turned it down because she didn't like the script and thought the movie would bomb.
5. The crew were planning to use an actual taser in the taser scene in the first movie, but Warner Bros. reps demanded they use a prop instead.