Derived from the terms "fuck yo couch nigga" and less popular "suck yo cock." "Fuck yo clock" takes the terms to the next level, as coitus with a man's timepiece is one of the most heinous offenses.
Bro: These eggs are cold, man! Go fuck a clock.

Man: Bro you just mad 'cause yo cock just an hour hand.
by Vik___ August 15, 2009
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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
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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
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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
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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
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