What does best friend means to you?

Today I am so interested to this question:" What does best friend means to you?"

I went out with Jac today. We went to eat breakfast in KFC and chat while eating. This question just pop out and I and her had diff definition. To her best friend must least contact almost everyday or at least once a week. For me, I feel that since is best friend means we are very close so have problems then find best friend and ask each other out once in a blue moon is ok. She say I have old thoughts, then i told her this is mature thought. She say I am very random when comes to contact. When she was almost going to give up on me, I contact her. Haha. I don't know how to type la. Sorry.

For Jia Wen, for her have problem or no problem must contact, share problems and meet up when free.  The purpose is to maintain the friendship and Jokes.

So what does friendship means to you? I really want to know. Haha