# fuck if I know

idiom · Vulgar

Source: https://englishreference.com/idiom/fuck-if-i-know
Updated: 2026-08-10

## Meaning

I have no idea whatsoever

## Examples

- Where are my keys? Fuck if I know.
- He asked me why the project was delayed, but honestly, fuck if I know.
- When the detective demanded to know the suspect's whereabouts, the witness shrugged and replied, fuck if I know.

---

From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.