sumonday 

its technically monday, but since you partied all night and havent gone ot sleep its sunday

Me: Dude its monday
You:No its sunday
Me: Technically monday but since we havent sleeped yet its sunday, so its sumonday

sumonday by Christian Renteria February 18, 2008

Smonday

The anxiety and sadness you get on Sunday when you realise it's Monday the next day.

"Smonday urghh "
"Nooo, it feels like Smonday"

Smonday by -Chloe- October 28, 2019

shmonday 

when you had a shitty sunday so your gonna take monday off and make it your good sunday

Bob: is today sunday?

Bill: yeah it is

Bob: it sucked

Bill: yeah it did

Bob: i think i will take a shmonday tomorrow

shmonday by achflemmed April 16, 2009

Smonday

The later part of Sunday when one is busy working to be ready for Monday. Smonday is a very taxing period of time, usually involves no sleep the night between Sunday and Monday. Involves large amounts of caffeine intake. More relevant to business executives and students.

Example 1:
"I can deal with Monday but it's Smonday that kills me."

Example 2:
Boss: "Venkateswaran, lets have the reports ready on my desk by Monday morning. And enjoy your weekend buddy!"
Venkateswaran (to himself): "Enjoy my weekend my &*%! No sleep two Smondays in a row, damn it"

Smonday by linguistiky October 7, 2007

Smonday

When Sunday stops feeling like a Sunday and the anxiety of Monday starts to kick in.

Person 1: uh oh, it's starting to become a smonday
Person 2: smonday? OH NO

Smonday by TheLolicon27 June 3, 2019

Smonday

Coming to the realization in the later half of a Sunday that you wasted another weekend and getting depressed.

Ugh just another smonday amirite?

Smonday by SloppyJoseph01 May 11, 2017

Smonday

"Smonday" is a word you would use if your partying goes a little beyond normal standards and escalates into Monday, technically under those circumstances it's not really a "Monday" so to speak.

Hey guys are we gonna be taking a Smonday? We might as well since it's so far into the night (Sunday night) and we're still having a blast! True 'dat.

Smonday by Kataaa January 28, 2020