I just realized exactly what the misconception was that the OP was under. He was under the misconception that using so-called "adult language" makes you an adult. But like many of our English words the meaning in this case is just the opposite. There are times when "bad" means good and when "yeah, right!" means wrong. There are times when "cool" means hot and when "hot" means cool. In the case of the phrase "adult language" the word "adult" means juvenile.
