This movie is funny. The reason why people hate it...
Its because most of the people on this website don't understand good comedy writing. They think that The Hangover is God's special gift to comedy. This movie is like a early 90's late 80's throw back up there with The Great Outdoors.
I know I'll get trolled and flamed for this but I don't care I know comedy when I see it. This movie makes me laugh from the witty comments to the slapstick humor.