Bloody Chainsaw Girl is a typical exploitative movie from Japan.  It’s based on the manga Chimamire Sukeban Chainsaw.  The protagonist fights students who have been turned into zombies by her mad scientist classmate.  It manages to fill most dialogue with nonsense, especially the rationale of the villain – which is so nonsensical I still cannot comprehend.  Anyway, with the whole thing being so crazy it becomes a little bit funny.  If you want an example of the craziness, look at the poster here and see where the missiles come from.