Unknown artist 

junior Grimes (J. Grimes)

Australian-british rapper singer and PI, and loner outcast individual who’s got a freestyle titled “unknown artist” as well

Junior grimes is an unknown artist

Unknown artist by Postage it October 27, 2021

Unknown p

“He never goes east cause bare man try spot p like acne“

Unknown p my jiggy g-star want to go get a good ol 39 p drink at uncle rajs

Unknown p by timmy and th slimez fo sure November 14, 2020

unknown in the oven 

when a girl is pregnant with the love child of unknown, a notorious message board poster

Hey, you heard Picc's pregnancy test was positive? She must have an unknown in the oven.

unknown in the oven by Hugh Jazzzzz January 19, 2008

unknown unknown

In the words of Donald Rumsfeld, something that we don't know that we don't know. C'mon Donald.

Each year, we uncover a few more of these unknown unknowns.

unknown unknown by Bushmonkey April 4, 2006

Unknown Temptation 

the meaning of rapper xxxtentacion's name

child 1: What's xxxtentacion?
child 3: oh that's unknown temptations

Unknown Temptation by jaexob June 11, 2019

Unknown unknown

These are things that you don't know that you don't know, as opposed to things that you know you don't know. Coined by Donlad Rumsfeld, former US Secretary of Defense.

Boss: Is there anything that will cause this system implementation to fail?
You: That's an unknown unknown!

Unknown unknown by seven852 September 20, 2009

unknown best friend 

In the social network society, the unknown best friend is a friend know only with his written words (private message or private chat).
The relationship with the unknown best friend is close, long and mutual, with solidarity, protection and compatibility.
It's forbidden and unnecessary meet your unknown best friend.

I write to my unknown best friend everyday, but I'll never see him (or her), because it's not important: I belong to him (or her) through the mutual solidarity.

unknown best friend by gericokiller March 12, 2010