Two things:
1. What REALLY constitutes bullying these days? Like that example from Michelle Trachtenberg with the guys being paid for jokingly asking her out for a Dance. I would call that a prank, not bullying. And that thing with the breast, that's also not really bullying in my opinion, that's being an immature jerk. When I hear people's "bullying" stories, a lot of times I can't help but wonder in what kind of bubble they grew up. People have always been known to fight amongst each other sometimes and say bad things, that's the way it's always been, and that is not really bullying. At some point some people need to realize that that's just the way life is, and either you learn to stand up for yourself every once in a while or you're not really fit for life. I don't mean to downplay real cases of bullying, like when physical violence is involved, or when like a clique in school is making it their goal to destroy you no matter what, but in cases like when somebody calls you fat once, there's no need to go straight to the principal crying your being bullied and everyone is so mean to you.
2. In my experience, a lot of people who are being 'bullied' (and by this I mean mainly receiving some mean comments from their peers) kinda have it coming. I don't know what things were like at your schools, but people that are usually being targeted from where I'm from are a lot of times either
a) smelling bad, like not showering and no personal hygiene
b) fat, in which case (assuming it's not due to medical reasons) either in my opinion you should stand by your own body and not give a damn what other people say about it, or, if it bothers you that much, lose weight
c) dressing in a certain style / being part of some scene / (also including makeup, the lack of it, haircuts etc.), in which case I also think either you should stand up for the way you decide to look like or, if it really bothers you, adapt.
This probably reads pretty harsh, but that's what I think about it. People are entitled to their opinions, and in schools whenever these opinions are not exactly the nicest, a new case of bullying seems to spring. But that's the way the world works. People are not gonna shut up to convenient you. So either learn to live with what they say about you, or change to conform a bit more.
(And once again I'd like to stress that this is about the cases that imo aren't really bullying, but just kids being kids, getting a bit mean sometimes. Obviously, if it becomes an obsessive thing, physical violence is involved, it's a big group that tries to make you break down intentionally (like everyone posting on your fb wall to go kill yourself), etc., it's a different story.)