The reviewer who gave away so many key moments in this film has done nothing but show his/her total misunderstanding of the film. He should look up the word Pastiche. His/her review is entirely inaccurate and is a complete misrepresentation of a neat and entertaining film.
No vaginas are ever seen and the film is entirely within the scope of teenagers to watch and enjoy. It is a fun film where anyone who has a dark sense of humour will get it. If you prefer linear, and hackneyed story lines and repeated big studio 'aim at the biggest audience and don't tell a great original story' type of movie, then no - this is probably not for you. Why do people who cannot understand what a movie is doing, broadcast their utter stupidity publicly?