Why are teenagers such rude show offs??

I'm sorry this happened to you and your friend. Some kids are just raised to think that their lifestyle is the only acceptable one. Most of this behavior stems from the parents and the way they have taught their kids to treat others, plus the fact that they give them everything without having to work for it. The saying is true when they say the apple doesn't fall far from the tree... When you get out of high school the whole world changes. They don't have all the friends every day to fall back on. People go their different ways and some don't know how to exist without their backup support.