You understand that the meaner she is to you, the more she likes you.
It's a kind of secret language you share. You know when she says, "Hey loser!" she really means, "Hey bestie!" And when she says, "I hate you," she actually means, "I love you." Or when she pushed you into your locker at school and laughed, it was her version of a hug.

She steals your clothes with no intention of giving them back.
And when you ask her where that shirt is that she borrowed two months ago, she says she doesn't know. But then wears it to class the next day. It's fine, though. It looks better on her anyway, I guess.

You are always blunt and honest with each other.
Did you make a mistake by texting that boy last night? Yes. Does her outfit of a shark t-shirt, sweatpants and combat boots looks ugly? Yup. And you're not afraid to tell each other those things. Y'all have no problem being straight up and honest. You won't hold back your opinions to spare the other's feelings, and you love each other for it.

You constantly bicker, but never get in actual fights.
Who was really to blame for that spilled ice cream in the car four years ago? The world may never know. (It was her). even though you will still argue about it to this day whenever someone brings it up, the good news is, this is about as intense as your arguments ever get.

You laugh the hardest together in the most inappropriate situations.
Like in the middle of church when the whole congregation is in silent prayer. More than once.

Your comebacks can never top hers.
For some reason your friend always has a way better comeback. That super witty comment you just made? Nope. She can do better. Soon enough, you're out of comebacks, you've lost the battle and are left struggling to climb out of the hole you've dug for yourself.

You're the butt of her jokes, but you usually laugh the hardest at them.
If there's something your best friend loves doing, it's making fun of you. Whether it's public embarrassment or telling people that you tripped and fell at graduation, she knows she can always count on getting a laugh out of people, especially you.

You get friendship, love, and laughter for life.
Together, you create the most unforgettable, and usually hilarious, memories that you will never forget. She's your best friend for a reason, and just like a real sister, she will be around forever. At the end of the day, you love her to death, and don't know where you would be without her.