1. Your clean cut "nice" teenagers. These teenagers act more like young ladies and gentlemen, have a job, are involved in some sport or hobby, get good grades, love MTV, read Seventeen magazine like it is the Bible, and their whole life is centered around that prom and getting their drivers license. They like to listen to the latest pop hits and idolize teen idols. These are the ones that are probably going to end up like successful adults.
2. Your rebellious "misunderstood" teenagers. These are the ones that are hitting the parties, having sex, being involves with drugs, drinking, pot, gangs, start a band, spend some time in juvvi, and the media makes a big deal out of them. They may appear hopeless, but they have experience the "real world" faster than the ones that are the "goody goody" prom going teenagers, which their lives center around high school and the mall. Many of them change to be successful adults as well.
Teenagers aren't mentally ready, or responsible for relationships. Love at first sight? No, lust at first sight my good gentlemen, there is a difference.
adult one- look at those good for nothing kids
adult two- lets cross the road before they tryto sell us drugs
Fellow teenagers who demonstrate ageism toward their own peers are generally anti-social, bandwagon-jumping slapwads who try too hard to appear edgy and enlightened, thus categorizing them with other lameass individuals of their age bracket; this behavior can only be encapsulated with the term "teenager," by their defintion.