That one friend who always drops by at exactly eleven-o-clock.
Dude 1: Hey, what time is it?
Dude 2: I dunno, have you seen eleven-o-clock Dan yet?
Dude 1: Nope. Guess it's ten-thirty.
by satyrcynic March 31, 2010
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If you are thinking too deeply into this saying, you clearly need a drink.
Jen: "Well, I'm in the mood for a beer right now"
John: "Are you an alchy? It's 2:30!"
Jen: "Hey, it's five o-clock somewhere"
John: "what does that even mean? it's not 5:00 here"
Jen: *summons strength* "we need to get you a strong, healthy beer"
by pynchonian October 31, 2014
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Drunks who after being kicked out of the bar head out to local restaraunts.
Oh Great, the bars are closed here come the two o' clock charlies.
by DennisIsEvil October 15, 2005
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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 23, 2016
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When your in public and you get a boner, so you flip your cock up into your waistband. It feels really good so try not to bust a nut into your bellybutton.
"I was sitting in class thinking about Gabby and Brandon, cuz i'm bi,when I got a boner so I did the 12 O' Clock Tuck and no one knew I had a boner. It felt so good, I almost busted a load into my bellybutton." said Tucker
by Brandoner Smith January 2, 2008
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The female version of a 'five o' clock shadow'.

When you apply fresh eyeshadow/eyeliner in the morning, then realize that is has all smuged/melted/creased by the time you get home from work.

Usually caused by cheap makeup and/or a hot environment.
Five o' clock eyeshadows aren't nice.

Girl 1: Hey, did you see Katie when she got back from the office?

Girl 2: I know! She had five o' clock eyeshadow.
by The Lulzinator September 12, 2009
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