My best friend is being cocky about having a lot of friends on facebook?

[*sweetdreamer*]

Recently, whenever we're talking on the phone, skype, or in person, she's been bringing up how she quote, " yay i finally have more friends on facebook than you".
And keeps on saying, "yayy im popular!"
Then, to make things worse, she'd go to my profile just to check and prove she's right, even when we're on the phone or on skype.

I've tried telling her that just because you're friends with all those people on facebook, doesnt mean you're really friends with them in real life.
I've tried to ignore her and change the subject so she knows I couldnt care less, and told her popularity shouldnt be a huge priority in life but she still always brings it up, which just annoys me.
She even admits that she doesnt talk to half of them on a daily basis.

So my question is, what can I say to her next time, or do to get her to stop bragging and making this like competition to her?
She's one of my best friends, and I dont want this to be something I stay mad about.

Sorry this turned out longer than I expected..
Any advice is appreciated, so thanks guys