He's out of his mind simply because it wasn't funny.
Review: While Darker, ‘The Hangover Part III’ Ends Series In Forgettable, Unremarkable Fashion
It would be unfair and an exaggeration to say ‘Part III’ ends with a whimper, as there are a few moments to savor, but there's hardly a climatic bang and, sadly, absolutely nothing epic and explosive about this rather tepid and forgettable trilogy closer. [C-]
Review: THE HANGOVER PART III Is Barely a Comedy | Twitch
For a Hangover film, this one is shockingly tame, with an equally shocking emphasis on plot and action over gags. There are stretches where the film isn't even trying to be funny, let alone succeeding -- but it isn't good as an action-oriented comedy, either. Busy and frantic, yes. Just not in a way that makes you laugh. This represents a grave misapprehension of our feelings toward the Wolf Pack. I can't speak for everyone, but for myself, I have no interest in joining these guys on a journey that ultimately leads to their redemption. They aren't the sort of characters whom viewers empathize with or relate to. They're the sort of characters who make us laugh when crazy things happen to them. That's what we're here for, not this baloney about Alan finding his place in the world. Where's a Thai ladyboy when you need one?
Jason Sudeikis being NOT funny and Jennifer Anniston being NOT sexy. Pass. Looks about as entertaining as that Date Night movie with Carrell/Fey.
And...in "That's NOT comedy" news...
Will Forte Says He’s Locking Himself in a Room on June 10th to Write MACGRUBER 2 | Collider
Can someone please find this room and make sure that the door never gets opened????