Dump O' Clock 

A time (preferably during work hours) when one uses the bathroom to drop their load (or just look up memes on the internet).

Kami: "Chris has gone missing!"
Tim: "It must be Dump O' Clock."

Dump O' Clock by 50K All Day March 20, 2018

Glock O' Clock

Generally announced when it has been decided that it is now an appropriate time to shoot somebody.

Man im sick of my mother telling me to eat my greens, its Glock O' Clock

Glock O' Clock by Curio_uk November 13, 2009

WTF O'Clock 

After working straight through the evening it is the hour when you realize that you've worked all the way through the night, and the sun is about to rise.

This most often happens with design, development or other types of work when it's easy to lose time while focused on the task at hand.

I really got in a zone working on the design comp for the new project. I started around 3p and worked until WTF o'clock.

WTF O'Clock by reroller April 2, 2009

Nigga O'Clock 

Time when black people act like niggas. Usually triggered sighting of police or drugs. Can be associated with black rage and Nigga time.

Connor: Man, what happened to you?
Jerome: I was hanging with Jamal, right, and I didn't realize it was Nigga o'clock, so when I said something about his mama, he pulled out his gat, pistol whipped me, and jacked my wallet!

Nigga O'Clock by JOOW December 29, 2009

2 o'clock scramble 

The act of trying to pair up with someone quickly at the end of a bar / club night, especially when drunk. Kind of like sexual musical chairs. Also known as a 1:59er.

Kelley: What happened to Camilla last night? I thought she was going with us to the Waffle House?

Jamison: Nah, she got picked up in the 2 o'clock scramble by that guy she was dancing with all night.

Kelley: Eeew! The balding one?

Jamison: Yep! I bet she won't be happy when she wakes up next to him!!!!

2 o'clock scramble by tryingtogetleid April 14, 2009

2 o'clock brunch rush 

(n.) the wave of hung over college kids that comes into the cafeteria for brunch around 2pm; typically occurs on Saturday and Sunday.

Guy 1- "Dude, you were so wasted last night."
Guy 2- "I know, I need to eat!"
Guy 1- "Well, you'll be smack dab in the middle of the 2 o'clock brunch rush if you go now."

2 o'clock brunch rush by Da Sperminator January 24, 2011

12-o-clock 

A wheely that stands straight up and down.

Damn, that motherfucker just kicked a tight as 12-o-clock wheely. damnnnn that shit was tight!!!!

12-o-clock by Benny Chains December 18, 2004