Embarrassingly unfunny
I found this movie very disappointing, especially because many scenes had the potential to be very funny, but unfortunately they were not. All jokes that were intended to make the audience laugh were overacted so badly that it was almost cringe-worthy.
But obviously, many people must like this kind of brainless, contrived humor. This movie was a big enough hit, that it spawned two sequels and even plans for a US remake.