Mursday 

A day of the week which appears only when something happens that usually would never happen such as a blackhole, division by zero, learning to carry pineapples with your mind, etc. Mursdays have never appeared in the history of mankind.

When that loser Ebert finally got laid, everyone thought that the next day had to be Mursday, however, it was only hell that froze over.

Mursday by Philly Gilly September 14, 2009

Muesday

The Tuesday following a holiday Monday. Feels like Monday, but is actually a Tuesday. Can totally fuck your week up and cause you to miss meetings and piss off your friends.

I missed an appointment today because my subconscious was convinced it was Monday, when it was actually Muesday.

Muesday by niftydog January 28, 2008

Mersday 

A celebration of a person(s) graduating from Harvard.

This term was created by a person named Darryl Jones that graduated Harvard.

Jared:Happy Mersday Danny.
Danny:Thank you!

Mersday by Ethan Hong Long Nguyen September 19, 2012

Case of the Muesdays 

After a holiday on Monday, going back to work on Tuesday feels like a Monday. You will have a case of the Muesdays.

I have a case of the Muesdays. I need a nap. Or a muffin.

Case of the Muesdays by Wafsnipes23 May 27, 2014

Muesday

A Tuesday that feels like a Monday, typically after a Monday holiday, such that you overlook events scheduled for Tuesday.

Dang, sorry I missed the review, thought it was Monday being Muesday and all.

Muesday by HookedOnDiscGolf September 6, 2018

Murfday 

Birthdays attributed to persons with the surname Murphy. Original date for Jonathan Murphy born July 21.

Wishing you the happiest of Murfdays Jon!

Murfday by Jonmurf July 21, 2021

Muesday

The Tuesday after a Monday holiday that everyone dreads.

Muesday is the worst day of the week.

Muesday by Ickyv September 6, 2023