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

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