On the other hand, here's something universal

Teenagers on buses, being loud, blasting music, and assuming that their life is something everyone wants to hear.

Hey, I'm not criticizing. We took the public bus in high school and we took over the back with no thought that our conversations might be private or our music unpalatable to others. It's just kind of reassuring that at least as of the age of 15 or so, human beings have that in common.