A best friend is someone that you can have tons of fun or "get lost" in an unfamiliar city with.
(Okay, so we didn't get lost. We did take a few wrong turns, though.)
(Sorry for the poor quality, this one was taken on my phone.)
A best friend is someone you can talk to when you can't talk to anyone else. You can cry with her, laugh with her, and take pictures with her.
If you'd like to see more friends, head on over to Beth's.