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The time at which a person has totally outstayed their welcome, and is asked to leave.
"Steve, it's fuckoff o'clock mate. Time for you to go."
by Kez 4 Prez August 16, 2014
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5
What you say when someone asks you what time it is and you really could give a shit.
"Excuse me, kind sir. Would you please tell me what time it is? I am late for an appointment."

"Why sure! It's fuckoff o'clock!"
by Shane Holmes October 24, 2014
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