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Fuck If I Know... used in response to something you either 1. have no idea about or 2. could give less shit about.
TJ: What time do we have to be at work?

Meaghan: FIIK. Whenever we get there.
FIIK by meaghanbrez October 17, 2008
Related Words
FIIK FIIKD Fiiker FIIKLFO
Dude1: Hey Bob you know the score to the Browns Steelers game?
Dude2: .... FIIK man!
FIIK by Fizz :) April 14, 2006
Fuck If I Know

Used when you are totally clueless or do not care about the subject matter.
A: Do you know who won the game last night?

B: FIIK man, I don't even like sports.
FIIK by Visible Ninja March 24, 2010
Jane: "Hey, did I put the KD in the left cupbord or the right?"
Tom: "FIIK"
FIIK by TBA July 30, 2007
Acronym: Fuck If I Know.

It is a definitive statement used primarily by those who are tired of answering probing questions into a subject that the user either does not know or could care less about. Usually employed in online conversation or when trying to watch one's tongue.
Example 1

Person 1: "Dude, Do you know where i put put my car keys"
Person 2: "Seriously for the twentieth time. FIIK!"

Example 2
after being interrobanged for the 18th time in the game of 20 questions by a significant other the answers can become shortly stated as FIIK
FIIK by user 824675 March 11, 2010
"Why do you think he's been acting so weird lately?"
"Maybe he wants to be a gypsy. Fiik"
Fiik by SmugDruggler January 12, 2021