flavor of the day 

A romantic interest or hook-up lasting for a short period, often one day or less.

Is Cyndi going out with Scott? No she's just his flavor of the day.

flavor of the day by Balibago October 11, 2013

Canary Day 

A Canary Day is a colloquial expression for a day of immense slothfulness, rest, or otherwise inhibition to perform the daily duties and routine of ones life. Often it is associated with drug use, abnormal sleeping schedules, and containment in a closed space for the entirety or majority of the day.

"I just had a 'Canary Day' week. I was so stressed from last week's work that I just couldn't focus on anything this week!"

Canary Day by Jason Michael December 28, 2005

beautiful day 

In New Zealand: Used to describe the one day of the year when it is sunny.
In Australia: Used to describe pretty much every single day.

By God, it's a beautiful day init?

beautiful day by Bom Chika WahWah October 16, 2007

partial day 

Used as a substitute for 'half day' in the context of attending work. The purpose is to be vague, so as to not obligate yourself to actually being present for at least half the work day.

He's taking a partial day today, so he'll probably show up at 3pm and leave at 5.

partial day by Rana A February 18, 2008

Tomboy Day 

In September 3 everyone let's appreciate tomboys existence for they give us happiness and smiles

"Hey its Tomboy Day! You know what it means."

"Hell yeah! Let's start this very awesome day!"

Tomboy Day by Momimomenon April 7, 2021

National Percy Jackson day 

National Percy Jackson day is October 8th. To celebrate, draw a trident on your forearm.

Me: Did you know its National Percy Jackson day?

Person A: Yeah! I drew a trident on my forearm to celebrate.

National Percy Jackson day by Your_WorstNightmare_ October 13, 2016

Valentine’s Day 

The glorious day out of the year when pot hub premium is free.

Guy #1: so what are you doing this Valentine’s Day ?
Guy#2: pornhub is free today, bruh

Valentine’s Day by The guy over there February 14, 2018