Clearly I was delaying this watch for over the past couple of years. Finally, I ended watching it during this holiday season (December 2015). I am glad to get over with it and sad for dragging it this far, because the film was not that bad as I have heard.
May be we call it the men's version of the movie 'Teeth'. Since the sexual intercourse is kind of complication for the theme from this movie to draw a better storyline, they have introduced a fictional character that detachable from the human body. That is very funny as well as disgusting.
Under 17 requires accompanying parent or adult guardian 21 or older. The parent/guardian is required to stay with the child under 17 through the entire movie, even if the parent gives the child/teenager permission to see the film alone. These films may contain strong profanity, graphic sexuality, nudity, strong violence, horror, gore, and strong drug use. A movie rated R for profanity often has more severe or frequent language than the PG-13 rating would permit. An R-rated movie may have more blood, gore, drug use, nudity, or graphic sexuality than a PG-13 movie would admit.