5 o'clock shadow 

Short beard stubble on a man's face that has grown since the morning shave, usually experienced towards the end of the day.

Can be used to describe a man who looks scruffy, overworked/tired, hung-over or rugged.

"Rough night last night? Got that 5 o'clock shadow."

5 o'clock shadow by StephenCarr October 19, 2005

Pi O'Clock 

The time 3:14. Can be AM or PM. Also, Pi Time.

Guy 1: "Hey, what time do you want to go to the bar?"
Guy 2: "I have class until 3. Let's go at Pi O'Clock."

Pizza Place: "Your pizza should be ready to pick up at Pi O'Clock. Thanks!"

Pi O'Clock by Krish the Fish March 16, 2010

drunk o'clock 

the time at which someone is noticeably drunk, especially when it is not at a generally accepted time to be drunk.

"I called Bill at about 2 pm, and he was already slurring his words. Apparently, it's already half past drunk o'clock for him."

drunk o'clock by The LJ-rizzle March 23, 2009

silly o'clock

A time of morning (or night), usually between 3AM - 6AM in the local time zone that requires a person to interrupt normal sleep or waking patterns for often dubious reasons. Often used in reference to extremely early arrivals to airports, or to join business teleconference sessions with participants in multiple time zones. Also see stupid o'clock.

"I don't look so good because I had to be at work at silly o'clock this morning to join a videocon with our development office in Greece."

silly o'clock by ToddUncommon October 26, 2008

Spliff O'Clock 

Whenever it's time to roll a spliff.

Right, it's fuckin spliff O'Clock, wheres my ganja?

Spliff O'Clock by Lukey Dread Boy May 24, 2007

Friday O'Clock Shadow 

The beard you grow when you've been too lazy to shave all week.

"Are you growing a beard?"
"No, it's just my Friday o'clock shadow."

Friday O'Clock Shadow by Jeremy Ampe December 9, 2008

Five o’clock Vodka

Five O’clock Vodka is the cheapest fifth in almost any liquor store guaranteed. Mineral spirits disguised as a fifth. Upon drinking, the brave souls must sign a mental waiver guaranteeing explosive diarrhea in exchange for waking up in a dumpster with 2 Chinese hookers, an extreme headache, and 2 packs of pall mall ultra lights. It’s the gift that keeps giving until you find yourself in the throes of rejection forcing yourself to vomit over and over. But at 5.99 a fifth, I’ll take my chances. Buyer beware.

Dan purchased a fifth of five o’clock vodka, and woke up the next morning in a space station watching loony tunes reruns, tied to a stripper pole

Five o’clock Vodka by AssEatersGlobal May 17, 2018