Sunmunday 

A work day that begins on Sunday, and may last through the end of Monday. Typically, this is used to indicate a shortened weekend because of work-related duties. 2. Getting a head start on the week by starting work on Sunday night.

1. I can't go camping, my boss called me in for a Sunmunday. 2. Don't talk to me, don't look at me, just let me go home. I just worked a 36-hour Sunmunday.

Sunmunday by Markus B September 3, 2009

Smunday 

Staying up all night from Sunday to Monday morning. Two days rolled into one

Stayed up all Sunday , still awake Monday morning. Feels like a Smunday

Lets get on the Sunday sesh , love a good Smunday

Only planned going out for abit Sunday evening. Now it's Monday . Had no sleep. Got work in couple hours, been a messy one. Definitely a Smunday

Smunday by PeckishPeg July 22, 2018

Schmunday

An extra day between Sunday and Monday. A day whose sole purpose is to facilitate recovery from the weekend and prepare people for a week of doing things they dont want to.

Thank Schmah it's Schmunday!

Schmunday by Schmah March 7, 2011

Sunksunday 

A Sunday during wich you drop everything you planned on doing (productive or other), to instead chill with your boys and eat unhealthy foods.

Hey bro! Guess what? It’s time for Sunksunday!

Sunksunday by DailyGymFuckery February 23, 2020

Sumunda Nuts 

The smell from under a males scrotum, or balls.

guy: "You Smell Like Sumunda Nuts."
girl: "Whats that?"
guy: "You smell like something under my nuts"

Sumunda Nuts by chunky_monkey April 10, 2009

Smunday 

Noun; The comination of the days Sunday and Monday. Often used to describe a 48 hour period of sleeplesness between Saturday and Tuesday.

"Dude, I havent sleep since yesterday, it's been one hell of a Smunday."

Smunday by KungFuCorey December 11, 2006

Smunday 

When you take Monday off work because you just need an extra day off. It's not Sunday and doesn't feel like Monday, it's Smunday. Similar to how Brunch is a hybrid between Breakfast and Lunch.

I was so tired after the weekend I called into work sick this morning; I'm taking a Smunday.

Smunday by kickback chick February 6, 2012