by Dalmas January 02, 2014
The true usage of the phrase is to claim that you simply 'do not know', however, the phrase is often interpreted as 'Fuck Nose' which may cause offence to the listner. This mis-interpretation is often replied to using 'Cunt Face' which is regarded as the appropriate answer.
by Mystick Havok January 21, 2008
Wife: When are you comming home?
Husband: Well I've got all this paperwork to do. I won't be back till fuck knows when.
Neighbour: Oh, you're looking for Steve? He's gone on holiday, won't be back until fuck knows when.
Husband: Well I've got all this paperwork to do. I won't be back till fuck knows when.
Neighbour: Oh, you're looking for Steve? He's gone on holiday, won't be back until fuck knows when.
by Tom_NZ May 01, 2007
by FuckIfIKnow November 26, 2013
Hey Jack when are we leaving?
"At approximately ...fuck knows o' clock. Tomorrow."
What time is it?
"Fuck knows o' clock. Get a watch."
When did you fall asleep?
"Um, at fuck knows o' clock. I don't know!"
"At approximately ...fuck knows o' clock. Tomorrow."
What time is it?
"Fuck knows o' clock. Get a watch."
When did you fall asleep?
"Um, at fuck knows o' clock. I don't know!"
by HyperLynx September 22, 2016
by Snowy85 March 09, 2009
by bitchdipshit February 20, 2021