Sunday Night Syndrome 

When an individual finds difficulty in going to sleep on Sunday night because they know they have to get up for work or school the following morning. This may also apply on any holiday night before a working day.

Guy 1: How did you sleep last night? You look tired.
Guy 2: I am, I think I had a case of Sunday Night Syndrome.
Guy 1: Ah that always happens to me, it's really annoying.

Sunday Night Syndrome by The Word_Wizard April 1, 2019

Sunday Night Syndrome 

The inablity to sleep on sunday night (possibly monday, too) from being up to all hours the preceding nights. also, described as sunday night insomnia.

Kid A: dude, i'm so tired
Friend: me too, man. I've got a bad case of Sunday Night Syndrome.

Sunday Night Syndrome by nedflandersisajew September 12, 2011

Students' Sunday Night Syndrome 

Students' Sunday Night Syndrome is one of a student's most common anxieties. It's the feeling when you are sure you have no homework, but you are suspicious that you missed something or forgot an assignment. You feel free, but also a nagging anxiety that you're going to have to stay up late on the Sunday Night and work on it when you remember.

Students' Sunday Night Syndrome is often one of the symptoms of hardcore procrastinators.

Most of us with Sunday Night Syndrome react with sleeplessness or we just don't give a fuck and prepare for Monday Morning Homeroom Syndrome.

A: Yo man, why are you up so late
B: I have Students' Sunday Night Syndrome..I feel like I forgot an assignment

Students' Sunday Night Syndrome by boncuicui December 7, 2011