youth of today

I'm a nanny, right now I'm sitting in Maccas while the kids play on the playground, down the end of the bench seat are three teenage boys, making sex moans, singing to the music, talking rubbish and swearing constantly. There are kids here, elderly people... am I just getting old or is this disgusting to anyone else?? It's inappropriate, embarrassing and inconsiderate. If I were their mother I would be horrified about they way they speak and act in public let alone around small kids! So basically, do you think that teenagers are becoming ruder and more inconsiderate than they were in the past? Would it bother you if you were out with your kids and their were teens swearing and acting sexual around you? Or is it just me being old fashioned?