History Headscratchers / TheHangover

** Talking of ''Part III''''s ending... drunk tattoos are one thing, but [[spoiler:where did Stu find a doctor willing to give him breast implants in under a day while completely wasted?]]

** [[spoiler:Given that Doug was stranded up there without any food or water, his throat would have gone dry and his voice became too weak for him to shout.]]

* Part III's ending. [[spoiler:I get that staying away from Chow is a good thing, but how was association with Chow basically the cause of all of Alan's actions? I mean, the plot of Part III is Phil, Stu, and Doug taking Alan to rehab because of the way he has been behaving, until Marshall and his men abducted them and only targeted them because of their association with Chow]].

** He's really not. He's given some leeway by some of the guys because they understand that he's not really mentally all there, so they basically do treat him like a child and assume he's not entirely responsible for his own behavior. Stu ''doesn't'' really forgive him, as shown by the sequel, but at the end of the movie he's accepted that Alan probably did him a favor by opening his eyes to what crap his life had become, so he's nice to him for a little while.

* "The Wolfpack"? ''Really''?
** To be fair, it's Alan coming up with it. As well, he did have wrestling posters, so it may be a ShoutOut to the NWO Wolfpac

* "[[FailOSuckyname The Wolfpack]]"? ''Really''?

* Why is Alan always forgiven despite directly responsible for all the events in the movies and generally is shown as a dangerous sociopath yet treated like an innocent manchild?

* "[[FailOSuckyname The Wolfpack]]"? ''Really''?

* In the second movie, during the "Allentown" song Stu was singing in the boat, where did they get the guitar?

*** Actually [[spoiler: The real headscrather is why is the door locked from the outside? Roof door locks are reveresed. The inside is locked while the outside is unlocked. In case someone drops/doesn't have the keys so they won't be trapped. Then again they might have jammed the lock.]]

* Admittedly the movie wouldn't work without this, but it's still a big problem - Doug is stranded on the roof after the guys go up there to start the party, but especially in Las Vegas, a hotel roof is ''completely inaccessible'' by guests, to prevent people from committing suicide after a big losing streak. In fact, the doors work the ''opposite'' way - locked from inside the building, but easily opened from outside - in order to specifically prevent the kind of situation that happens in the movie.

* Admittedly the movie wouldn't work without this, but it's still a big problem - Doug is stranded on the roof after the guys go up there to start the party, but especially in Las Vegas, the roof is ''completely inaccessible'' by guests, to prevent people from committing suicide after a big losing streak. In fact, the doors work the ''opposite'' way - locked from inside the building, but easily opened from outside - in order to specifically prevent the kind of situation that happens in the movie.

** He will have had more than one Grandfather...

** He will have had more than one Grandfather...
* At the risk of complaining about movies I didn't like, a headscratcher page for this movie should really have one entry: ''"The entire plot"'' It's a standard drunken hijinks movie none of what happens makes any sense ''by design.''

** He will have had more than one Grandfather...

* I know it might be part of Don't explain the joke, but when Alan says he can't lose any more people, listing off his grandfather, why does everyone skip over the fact that said grandfather died in WWII, thus long before Alan was born, which means Alan would never have met him? Even Phil doesn't seem to be fazed.

* I know it might be part of [Dontexplainthejoke], but when Alan says he can't lose any more people, listing off his grandfather, why does everyone skip over the fact that said grandfather died in WWII, thus long before Alan was born, which means Alan would never have met him? Even Phil doesn't seem to be fazed.

** At the vast majority of weddings, it's about the ''bride''. No-one is going to begrudge the groom from wandering off with his best friends for a half-hour, especially towards the end of the night.

** Guess he had some free time after everything else was done?

* Why was Doug hanging out with his friends, looking at pictures, for a big part of his wedding night? Shouldn't he be, you know, with his wife? Or at least mingling with the other guests?

** [[spoiler:Patrons of the hotel are not supposed to be on the roof. It's probably presumed that people who are on the roof for legitimate reasons will have/be given a key to keep it unlocked.]]