When you go a little too hard on a Sunday night and start vomiting and passing out
guy 1: Broooo Kevin got drunk and threw up all over the pool chair

guy 2: oh my god not another Sunday night madness
by 123456789o8765432 October 25, 2023
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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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The result of procrastinating doing your homework all weekend, resulting in a frantic study period occuring late sunday night.
by keatonshepherd January 12, 2009
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Sunday nights, right before the work week begins, when almost everyone you know gets on Facebook giving an artificial boost to the amount of friends normally seen online
dude it's Sunday night i gotta check Facebook to make sure i didn't miss anything from the weekend. oh look everyone else i know is on guess it's the Sunday Night Effect

i have like 10 assignments due tomorrow (Monday)... hmm wonder what's happening on Facebook..
by ajax2220 February 8, 2010
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the inability to sleep on a Sunday night because you were out late the past two nights partying/hanging out and now you have to go to bed much earlier for work/school the next morning
"I only got 4 hours of sleep last night....I went to bed at 11 but Sunday night insomnia kept me awake forever
by jack butler505 March 3, 2011
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When you strike out on Friday and Saturday night so you feel obligated to go out Sunday night and there's only 30% as much going on, but you meet the one girl who saves the whole weekend.
So I had to work Friday night, and Saturday was lame. I was worried that I wouldn't be getting any for another 5 days but I went out for a couple drinks tonight, and I had a Sunday Night Miracle with this random girl Michelle
by Gonzo1234 December 15, 2008
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Sunday night depressing is feeling of stress and anxiety before the beginning of the week. Most commonly is created by fear of upcoming week and responsibilities of Monday starting duties. For example: being woken unnaturally by alarm clock, stress from work that is not likeable, feeling of duties by outside driven world. (stress, anxiety, fear, panic, hate, expectation, stereotypy, etc…). All elements are very individual and can create magnitude of negative emotions.
Sunday night depression, stress, anxiety, fear, panic, hate, expectation, stereotypy
by SundayNight October 28, 2013
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