When you dont go to church Sunday and sleep till noon. Then Sunday night you can't fall asleep till 2-3:30 and arrive to school on Monday morning tired and looking like crap.
Boy 1: Woah, you look...tired
Girl 1: I know thats the nice way of saying you look like crap!
Boy 1: What happened?
Girl 1: I have Sunday Syndrome..
Boy 1: What??
Girl 1: I stayed up all of Saturday night at a party, so Sunday I didn't go with my family to church and slept till noon. I fell asleep at 3:00AM this morning and woke up at 5:30AM!
Boy 1: Ouch
Girl 1:Zzz zzz zzz
by KonGluey January 16, 2011
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When you can't stand Sunday no matter what you do it just depresses or bores the hell out of you.
you don't like the shops being closed completely or open for shorter times and believe everyone should go to work just like any other day!

Why should non-religious folk be forced into "the day of rest"?????
person 1; Whats up with you?
person 2; Its Sunday!!!
person 1; and?
person 2; Everything is shut, people go church and stuff, I just can't stand Sunday's, I guess I have some kind of syndrome, Sunday Syndrome!
by MacSeoin September 29, 2013
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Sunday is a day in which people are unable to spell. This has been scienticfically proven by neurologists who say that On Sunday, so many emotions such as going back to school, and wanting to sleep in conflict with your laziness, causing in an ability to have difficulty typing or writing.
Billy (On Computer.): hey hwo's it going?
David (On Computer.): Fnie, hbu?
Elaine: (On Computer.): You two having Can't Spell Sunday Syndrome?
by ayclamato June 11, 2017
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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.
by The Word_Wizard April 1, 2019
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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.
by nedflandersisajew September 12, 2011
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When you're in church on Sunday and about 12 noon you notice yourself or others fidgeting or looking at their watches waiting impatiently for the preacher to finish the sermon so you can get to the buffet before others beat you there!
My God! Did you see Mary get up and leave RIGHT IN THE MIDDLE OF THE SERMON?!??! Yeah... She's got that Sunday Noon Syndrome!!!
by tirefire87 June 27, 2010
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Painful syndrome in which you wake up suffering physically in some way from the incredible night which preceded it.
Man, he was HUGE. I've got Sunday Morning Syndrome like you wouldn't believe.
by funnyfunny April 26, 2010
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