Friend of mine 

Means you’re a connected guy

“Ok when I introduce you I’m gonna say you’re a friend of mine. That means you’re a connected guy. Now if I says, this is a friend of ours, that would mean you’re a made guy, a capeesh! “ - Al Pacino Donnie Brasco

Friend of mine by Friend of mine May 14, 2018

it happened to a friend of mine 

The phrase that people use when saying a ridiculously embarrassing story about something that happened to to them. To save themselves from total humiliation they say "it happened to a friend of mine".

George: God, I am so embarrassed, I can't believe Stacy found out I was cheating with her.

Bill: Don't worry, at least you didn't cheat on her with what you thought was her sister but turned out to be her fat brother.

George: huh?

Bill: It happened to a friend of mine...

it happened to a friend of mine by Sieffy April 5, 2013

A Friend Of Mine 

'A Friend Of Mine' is a secret code phrase for 'Me.' Often used to refer to something embarrassing that they did or happened to them.

Person 0: Tells story
Person 1: How do you know that?
Person 0: It happened to a friend of mine. Who is totally not me! *Leaves*

A Friend Of Mine by Some rando out there March 25, 2023

friendofmine 

A friend who you went to school with, then transferred, (their your best friend) you transferred with them, and when they got to the new school with you, they hungs out with you. Then they slowly started to turn away from you. Now they're mean to you. And you're no longer their friend.

That girl is a friendofmine.

friendofmine by Auggie Lopez March 21, 2012