Revealing mistake: When the guys are on the bench and the kid is taking a photo of them with the cell phone, when the scene cuts back to behind the kid before the phone is kicked, the phone is just on the standard main screen. The camera is not even on.
The Hangover (2009)
1 revealing mistake - chronological order
Directed by: Todd Phillips
Starring: Bradley Cooper, Heather Graham, Zach Galifianakis, Ed Helms, Justin Bartha, Ken Jeong
Continuity mistake: The scratches on Phil's neck have completely disappeared by the time they're back for the wedding.
Alan Garner: I shouldn't be here.
Doug Billings: Why is that, Alan?
Alan Garner: I'm not supposed to be within two hundred feet of a school... Or a Chuck E. Cheese.
Trivia: During a speech in Toronto, Bradley Cooper told audiences that people in Las Vegas didn't even notice they were filming a movie, even though he had bloody tiger scratches on his neck, and Justin Bartha was beet red, nobody stopped to look.
Question: How does Phil end up in the hospital? They said it was in the pictures but I didn't see anything, just him in the hospital.
Answer: They show Phil in the pictures hanging out the with Carrot Top and getting punched by Wayne Newton; the fight with Wayne landed Phil in the hospital.
Answer: He got kicked in the ribs from the tiger, dry humping it in the back of a stolen police car.
Answer: In the pictures, it is Stu that is fighting with Wayne Newton. It could be assumed that Phil got involved afterwards, but it is never shown.