How does your product represent particular social groups?

The social group represented in my film (other than zombies) are teenage boys. The 2 starring in my film are white, 18 years old and working class. Though this wasn't intentional or planned in any way, they were just the characteristics of the 2 people I go to act. I hope this does not retract from my aims of making the characters represent the target audience.  They do not look or act in anyway to be associated with any subculture or social group. This makes the characters relate-able to a wider audience.
I think the characters are stereotypical to an extent. Their conversation is crude, and one of them smokes. Depending on who you ask, you may find that people believe all teenagers are like that, and my film does little to challenge that. Although, they don't act or dress like a stereotypical "anti-social youth".