Idmfk 

It’s means I don’t mother fucking know

Person 1: hey you mf u know what time it is ?
Person 2: Idmfk

Idmfk by Twaylee6 November 1, 2021

idefk 

I don't even fucking know. This can be used when you just have sheerly not the slightest idea what the answer to a question or problem is.

boy: "Wtf is free running?"
girl: "Oh god. Idefk."
*girl goes on and attempts to explain it.*

idefk by lovesonic April 2, 2010

idfk 

A semi-polite way of admitting that you don't have a clue. Abbreviation for "I don't f***ing know."

Boss:"What's wrong with the coffee machine?"
You:"idfk!"

idfk by Gumby January 20, 2003

IDEFKA 

Short for "I don't even fucking know anymore"

IDEFKA OF THESE SHIT

IDEFKA by MLGgurl69 September 30, 2015

idfk 

The abbreviation and more appropriate way of saying "I don't f**king know"

Wow, Idfk what that was.

idfk by Doctor Piggy June 3, 2016

idfka 

I don't fucking know anymore

ME: What are we going to do with out lives?
YOU: idfka

idfka by Niiceeeee April 7, 2016

idfkniki

A good tiktoker

idfkniki is a nice person that makes good tik toks

~Timur

idfkniki by Tibro July 15, 2021