look up any word, like thot:
 
1.
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!"
by Gumby January 20, 2003
 
2.
abreviation-i dont fuckin know
girl-do u like me
boy-idfk
girl-crying silently
by jzenna jonas June 17, 2007