Issue a public apology. This can be as funny or as serious or as creative as you want it to be.
Hmmm....this is a hard one.
Ok, here goes.
I'm sorry for not being your idea of perfect. I am who I am, and I cannot change that. I will not change for you, or for anyone else.
I am sorry I don't have the same things you do, like the newest computer, iPod, other electronics, the same clothes, the same vehicle, etc.
I'm sorry I don't have the same friends as you, or know all the same people you do.
I'm sorry I don't have the latest hairstyle, wear makeup, etc.
I am not sorry for who I am, what I have, and what I don't have.
I am not sorry I don't have a perfect life. It is better than some, but not as good as others.
I am not sorry for being me.