It's hard to say if it's the worst movie ever, but I can say for sure that at least it's in top 3.
The movie is full with the best of Spanish's actors, seriously, the cast is awesome, but there's no way of saying a single good thing about this "movie".
The plot has no sense, the acting is weird, the tempo is slow, the dialogs are simply rubbish, etc. you name a bad thing about a movie and you'll find it here.