Whatever time it is when you realize it was past the time you were supposed to be anywhere.
Well, that was fun. What time is it? Oh, it's Fuck O' Clock. Fuck!
by Harold Q Poppinjay January 14, 2011
Get a Fuck O' Clock mug for your guy Nathalie.
The time of day, typically in restaurants or cafeterias, between food rushes when service is very shitty and there's very little food selection. May also be used to describe times of poor service in other areas.
Tom: Wanna go get something to eat?

Jeff: No man, it's fuck you o' clock.
by Bebhanub September 11, 2010
Get a fuck you o' clock mug for your father-in-law Callisto.
An unknown time of day. Can be past, present or future.
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!"
by HyperLynx September 22, 2016
Get a Fuck Knows o' Clock mug for your barber Jovana.
any time at all AFTER an adult has used her/his authority over you to seduce you, rape you or make you watch porn
Pedophile: Hey, kid, what time is it?
Child: (Sassily) I want to fucking die o' clock
Pedophile: (Snidely) If you mean what I think you mean, it will be that time when you die from fucking if you keep up this brattiness

Child: Damn you
by E idiots dei April 18, 2020
Get the I want to fucking die o' clock neck gaiter and mug.