Overall, this pushes the limits of the PG-13. It is okay for older teenagers who are used to outrageous raunchy humour and propably have also seen the first two installments. If they handled them, they can easily handle this one.
Scary movie is a 2000 adult comedy/horror 1st parents need to know is it has some graphic violence with some gore. Parents also need to know that it has graphic adult sexual content it has a few Scenes with blow jobs and lots of sex talk and oral sex and extreme adult male nudity and probably some female nudity.