When you meet a friend of a friend that you have heard so much about them that you feel that you already know them as a person. Feeling that you are already best friends even if you have only met them twice.

Ex. Your mutual friends sharing inside jokes and then you all share the inside joke, even if the third party was not present when the said joke was made.
Best Friend By Association (BFBA) Scenerio:

Friend: Hey this is my friend Bob

Friend of a Friend: Oh your Bob? I've heard so much about you!!!! (Super excited, and might even share an inside joke that she heard from your mutual friend)

Bob: It's great to finally meet you too, We are like Best Friends by Association (BFBA)
by Bad Ass Unicorn November 30, 2012
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world's best rappers list

Easily Con Psy. Listen to the second verse in Not may (remix) by Scribe. His lyrics are incredible. He will be world renounded in 2-5 years.
'Cos I stay on... gimme you're words to play on.
and I'ma make your writtens look thick like you lost your pen and wrote it in crayon
But yo, y'all should play the back like scenery I'm dope....
the writings on the wall like graffiti
So,
y'all can't even hold your own
You get a manicure if you're goin' toe to toe
Suppose you know,
that I treat tracks like kicks 'cos I'm clean when I lace mine
I break minds, If I put a watch in a bum bag that's the only scene where I waste time
Let's go
by Con psy big it up! April 06, 2004
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a person says this to show how one apprieciates the other person or object; to show how much they like the person or object.
Chad-"Damn! Yo da best thing since sliced bread honey!"
Betty- "Give me yo numba and u will c the second best thing since sliced bread"

-or-

Tony- Wow! this video game is the best thing since sliced bread!
by --katy- June 20, 2006
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I'm Living My Best Life

1. During the Bachelorette season finale Rachel Lindsay, told Peter Kraus, that she made the right decision in saying goodbye to him. While sitting down with Chris Harrison, Peter apologized to Rachel for saying that a life without him would be “mediocre.” Rachel responded and told him that she’s definitely not living a mediocre life. “I’m living my best life,” she said.

2. A statement made at the end of a sentence declaring the actions you are doing are causing you to live your greatess life possible.

2a. It is a popular phrase used on young women's social media especially those who consider themselves hip and trendy.
I went to yoga this morning and had avocado toast for brunch, I'm living my best life.
by ThisIsLeo September 27, 2017
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