Teenagers in movies are usually one of three things:

[Archae]

1. Superpowered mutants. (Like the X-Men)

2. Sex machines, of varying success. (Most of the time failures)

3. Bloody messes after slasher/accident.

[Curtland1015]

1. 4. Mutant Ninja Turtles

5. 25 years old

[Auggie]

2. 4. Annoying pain-in-the-butts

[A Simple Game]

3. Almost always smarter than their parents. n/t

[riderinthestorm]

4. Twilight and Hunger Games series

You need to add more categories like "vapid breathy romance vampires", or "hardbodied survivalists"

[7wo7rees]

5. "You see us you want to see us..."

In the simplest terms...
The most convenient definitions...