The name and the premise ( lost memories of a bachelor party) does not really give you the right ideas about the movie. I was in split minds when I entered the movie hall. But my doubts lay to rest as soon as the credits start to roll.
This movie is a luaghing riot. The character "Allen" is f***in (i used this for a particular reason) hilarious. The minute details are handled very well.
Dont miss it unless laughing is injurious to your health.
Another movie you might want to catch for some laughs is Sankat City.