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!"
"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

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 12, 2008

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.
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.
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

by yahnahbrah April 10, 2015

Used when about to shoot at goal in a British football match, to both alert team-mates and scare opposition.
Also used as a exclamation when celebrating a goal.
Also used as a exclamation when celebrating a goal.
by Jimbozi August 5, 2008

by masterdopey October 9, 2009

by camie October 5, 2007
