The definition has changed. Everything has become stricter and more PC. PG-13 now means something else then when it was first introduced.

You can watch and read comments about this, for example here

What was "mature" about this film?

@Halberstram said:

What was "mature" about this film?

Possible Spoilers Nudity and crude sexual scenes, particularly during the first transformation (we actually see Dr. Jacks's crotch deflating) and final transformation (Helen Hyde getting an erection).

@dbzgal04 said:

@Halberstram said:

What was "mature" about this film?

Possible Spoilers Nudity and crude sexual scenes, particularly during the first transformation (we actually see Dr. Jacks's crotch deflating) and final transformation (Helen Hyde getting an erection).

Sounds hideous...

@Halberstram said:

What was "mature" about this film?

it's not the films that are mature, it's that audiences now are thought to be infantile...

Well, yeah, some find it difficult, as men, to remain "mature" when a scene in a film attempts to titillate, and succeeds.

It's just how we are programmed.

I'm not saying audiences are... I'm saying that the rating people don't think that people can handle it anymore... especially anything sensual... pretty disappointing state of affairs... we end up with very sanitised films now that have to conform in order to get a PG-13 rating and not be hit with an R...

On the flip side, if I'm watching a film with my parents, the last thing I want is a sex scene playing out.

A more cautious rating system can be a positive thing.

@Halberstram said:

On the flip side, if I'm watching a film with my parents, the last thing I want is a sex scene playing out.

A more cautious rating system can be a positive thing.

Haha I still get embarrassed watching a movie with my elderly mother if it's a bit promiscuous.

@ausfem said:

@dbzgal04 said:

@Halberstram said:

What was "mature" about this film?

Possible Spoilers Nudity and crude sexual scenes, particularly during the first transformation (we actually see Dr. Jacks's crotch deflating) and final transformation (Helen Hyde getting an erection).

Sounds hideous...

The full movie is on youtube, here's the link if you or anyone else would like to check it out: https://www.youtube.com/watch?v=GFf9khNkOtc&t=1007s