what the eff

what the eff

rude slang "Eff" is the spelling of the letter F, used as a euphemistic substitution for the expletive "fuck."
1. An exclamation of surprise or disbelief. A: "What the eff was that noise?" B: "Relax, scaredy-cat. It's just the sound of the heating system turning on." A: "It looks like your account is in arrears." B: "What the eff? That can't be right!"
2. Used to express extreme anger or indignation. What the eff is my ex-boyfriend doing here? I can't believe she just said that to me! What the eff!
3. Why not? An aside used to emphasize one's nonchalance toward something. A: "Do you want to skip school and go the beach instead?" B: "Sure, what the eff?"
See also: eff, what
Farlex Dictionary of Idioms.
See also:
  • what the F
  • what the fudge
  • what the hay
  • what the hey
  • sweet FA
  • sweet Fanny Adams