Well plastic newbie, I know you hate them, but I think natural big lips are a great asset to have! Remember the people that tease you are probably just jealous
The other thing to consider is that lips are similar to the eyes, in that a small change in their shape can make someone look downright weird. I don't know enough about lip reduction surgery to give sound advice one way or another, but this would certainly be a major concern of mine if I were you.