Why am I such an easy target?

I don't get bullied, but people seem to make fun of me a lot. Whether it's because I wear the same outfits quite often, or because I don't brush my hair (that's just the way I like it), or because of my track record with guys. Either way, I always seem to get it. And it's not like I'm the worst dressed person at school, I'm quite the opposite, and my hair is always very stylish, plus, a lot of the girls at my school have gone much further with guys than I ever have. It just seems like I'm a punching bag. Someone even compared me to Meg from Family Guy today, told me no one likes me and then called me a whore. What do I do? It's really getting me down.