This phrase comes from someone who always has or looks like they have a five o'clock shadow on their double chin.

Used to slander someone without actually letting them know why or what about. A nickname someone might think is cool but is really disgraceful.
Bill: Hey frank, Charlie always looks like he has a five o'clock shadow on his double chin.

Frank: Lets call him Five O'Clock Dub, bet he will think its awesome!
by Dublicious January 15, 2012
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a supremely upsetting time to be waking up. it might be really early in the morning, or anytime that makes you want to scream if you have to wake up then.
I had to get up at scream o'clock today to make my ridiculously early flight.
by Throatsoap March 16, 2018
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You are not allowed to get drunk before eleven
You have to take me home

But what am i going to do if i am not drunk before eleven

So you have to get drunk before 11

Yeah its the 11 o'clock rule
by burnt cracker March 17, 2010
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$3,000 o'clock is both the time and money lost while losing time and money at a casino.
(At the casino)
Her: What time is it? There is not one goddamn clock in this place!
Him: (Looking at ATM receipts and his wallet) "I'd say it about $3,000 o'clock!"
Her: What the damn hell! Let's get out of here.
by Siouxsie Supertramp February 13, 2021
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Ussualy, mid afternoon time after lunch when all toilets cubicles are occupied, exactly at the time when you need it for obvious reason
No way to take shit now, It's turd o'clock
by Jsjsisj November 8, 2023
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A time very late at night or very early in the morning when most people are or ought to be asleep.
My sleep schedule is ruined because my favorite YouTuber uploads at ass o'clock
by the riverside November 4, 2023
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