You asked me how I know they're teenagers, because you guys are so damn obvious. "Flame me all you want"? I'm sorry, would anyone over 14 actually say something like that? Or maybe you're 16, sorry. If so, you're that much closer to kissing a girl, so just hold on a little longer. Try that apricot scrub, it will help your complexion.
I have written an article about this sometime in the past. I'll reiterate the tidbit that is the most clear in reference to the assumption of someone who may be a teenager.
"The maturity of a person is not based on his or her years but based on the upbringing, the knowledge attained, and the influences of her immediate surroundings on a consistent matter. This is of course, being aside from mental deficiencies and such.
When we say anyone whom may not be as mature as what we think act like teenagers, we are assuming that generally or that all teenagers are immature. Why do we assume that? Because we associate teenagers with puberty, high developing hormones that causes our minds to work in raw behavior, usually to fit in with our peers and such, to get attention, to counter our own raw youthful emotions.
In reality, anyone at any given age can act any way. A lot of maturity has to do with perception of a given situation and knowing yourself, and having the ability to deal with those given situations.
A person can be 70 years old, have a lot of experience in his/her life, and through various scenarios, give great advice and suggestion, and still act rash and rudely to some circumstances. It's all about why do they act that way. You can't accurately say that they act that way because they have the mind of a teenager. In fact, I have met teenagers that are more mature than people in their 40's, 50's, and 60's. I have also met perceptive toddlers who know what to do and what not to do, than some teenagers and adults who have very little perception on any given situation."
Anyway, that's my tidbit.